California Survey Research Articles

California Surveys Experimental Programs in Business Education

California Surveys Experimental Programs in Business Education

California Surveys Nursing Employment

California Surveys Nursing Employment

Petroleum Developments in Mexico in 1956

An increase of 21.8% over the 330 wells drilled in Mexico in 1955 brought the number of wells completed during 1956 to 402. The average depth per well was 5,407 ft. for a total footage of 2,173,808 ft. One hundred thirteen wells were exploratory holes (65 new-field wildcats). New reserves were added through the discovery of 20 new oil and/or gas fields, 19 new pools, and 12 extensions to previously known fields. The total number of successful wells was 267 (66.4%). Exploratory tests were 45% successful (51 wells). The bulk of the exploratory effort was concentrated in the known petroliferous coastal plain provinces of the Gulf of Mexico. Two more stratigraphic tests were drilled in the Peninsula of Baja California, where gravity and seismic surveys have been extended into the states of Coahuila and Chihuahua in northern Mexico. Tertiary gas was produced in the Veracruz embayment and new important Jurassic production was established near Tampico in the Panuco-Ebano district. Crude oil and distillate production for 1956 was 94,096,355 bbls., an increase of 2,726,230 bbls. over the production for the previous year. Total gas production was 124,776,880 mcf.

Historical Background of the Geology of the Castaic-Newhall Basin: ABSTRACT

The Castaic-Newhall basin is a local name given to describe the eastern part of the Ventura basin, one of the major geologic features of California. It extends from the San Gabriel Mountains to Point Concepcion, a distance of 130 miles and contains a thick section of sedimentary strata ranging in age from Cretaceous to Recent. There are no widespread unconformities, though locally marked changes End_Page 2630------------------------------ in thicknesses occur due to marginal variations in sea level and source of sediments. Structurally the basin is complex and the compressive forces which prevailed caused tight folding and thrusting. Oil permeates zones in the Eocene, Miocene, and lower Pliocene. Control for the accumulation of the oil is largely structural, though the variations in sedimentary conditions naturally have a decided bearing on the details of occurrence and volume of production. Studies of the geologic conditions in the Ventura basin have been carried on since 1856. These first reports were concerned mainly with general observations on the character of the rocks, though evidence of bitumens were noted. After 1865 when the importance of the large seepages in California were advertised by Professor Silliman, the public became more interested in petroleum. Actual drilling commenced in 1870 and, as this activity increased, it led to exploration through the use of geology. W. L. Watts began his surveys in California in 1902 and in 1906 published his first work dealing with the petroleum geology of Los Angeles and Ventura counties in a bulletin of the California State Mining Bureau. Following this George H. Eldridge of the U. S. Geological Survey began a systematic study of the geology in relation to petroleum and this was published in 1907. A second geological survey was made by Kew in 1917 and published by the U. S. Geological Survey in 1925. Since then numerous intensive studies have been made by various oil companies and some reports have been published on specific areas. End_of_Article - Last_Page 2631------------

An economic-statistical analysis of lumber requirements for California housing

Residential construction normally accounts for almost half of the lumber consumed in California. A study of past trends of housing market demand, and an analysis of the factors underlying such trends, can therefore provide valuable guides toward insuring a reasonable balance between future supplies of forest products and future needs for them. The demand for new residential structures in California during the period 1920-1941 was found to be closely correlated with the increase in population, levels of family income, the cost of new home ownership, and the available supply of housing. The quantity of lumber used per dwelling in the same period was influenced by size of dwelling, type of construction, and geographic location, and showed a decline with time which indicates the influences of substitute materials and of more economical methods of wood use. Lumber consumption for new residential construction in California averaged 1.2 billion board feet per year in the period 1920-1929, and 0.9 billion board feet per year in the period 1930-1939. Under conditions of normal full employment, housing lumber requirements during the next two decades may be expected to range from 1.0 to 1.7 billion board feet per year. These figures correspond to minimum and maximum anticipated rates of population growth. This paper is a summary of a dissertation under the same title submitted in partial fulfillment of the requirements of the degree of Doctor of Philosophy at the University of California, 1948. Much of the basic data on unit lumber requirements, and portions of the material on residential construction, were obtained as part of the Forest Survey in California, conducted by the California Forest and Range Experiment Station, U. S. Forest Service, maintained at Berkeley in coüperation with the California Agricultural Experiment Solution.

STRUCTURE AND COMPOSITION OF CITRUS LEAVES AFFECTED WITH MESOPHYLL COLLAPSE

A pathological condition not infrequently observed in leaves of orange trees as yellow, translucent, sunken areas, has been called collapse* ' by Fawcett (6). Neither bacteria nor fungi seem to initiate this disorder of the leaves, though they may invade the weakened and collapsed tissues secondarily. The disorder has therefore been regarded as a physiological disturbance caused by insects and by edaphic and climatic factors, or by edaphic or climatic factors alone. Fawcett (6) first found mesophyll collapse in the coastal districts of southern California. In a series of papers, Fawcett et al. outlined the distribution of mesophyll collapse in South America. They found it in the coastal areas of the state of Rio de Janeiro, Brazil (11), but did not find it two hundred miles in the interior, in the state of Minas Geraes (12). It was also found fairly near the coast, in the states of Pernambuco (7) and Bahia (8), and in Sao Paulo as far as 40 miles inland and at elevations as high as 2,500 feet above sea level (8). None was noted in the Pitangueires area, some two hundred miles from the sea coast ; in the state of Rio Grande do Sul, however, it was found near the coast, at Montenegro (8). It was noted at Uruguayana, somewhat inland, near the Uruguay River (8), as well as at Concordia, Argentina, also near the Uruguay River. These investigators, however, found no mesophyll collapse in any other parts of Argentina (9). In Paraguay, mesophyll collapse was found at Asuncion, near the Paraguay River (10). The writers have made observations in North America and have noted the occurrence of mesophyll collapse in the coastal districts of the United States and Mexico. We have found it in the coastal districts of Florida, near Vero Beach, and in the coastal valleys of California. It has been observed in Arizona2 and it probably exists, also, in some parts of Texas near the gulf. Our survey in California has shown that the disorder is present in Ventura, Santa Barbara, Los Angeles, San Bernardino, Riverside, Orange, and San Diego counties. Its general distribution in California is shown in figure 1. This leaf condition is most readily recognized when the mature leaves are examined by transmitted light. It will then be observed that yellow, translucent areas lacking chlorophyll occur principally in the central portion of the blade, on one or both sides of the midrib (plate I, fig. 2). By reflected 1 Paper no. 484, University of California Citrus Experiment Station, Riverside, California.

Natural Frequencies of Uniform Cantilever Beams of Symmetrical Cross Section

Abstract During the last ten years numerous observations of vibrational periods of buildings have been made, especially by the Seismological Division of the United States Coast and Geodetic Survey in California. Even before the results of these observations were available it was recognized that the factors influencing the periods of buildings are many and involved, and that a rational approach to the problem must necessarily ignore a number of the factors. The debatable question has been, and perhaps still is: Which of the factors must not be ignored? If the discussion be restricted to apply to multistory buildings of relatively symmetrical plan, there is a temptation to consider the buildings cantilever beams planted in or on an elastic ground. However, a multistory building is not necessarily a slender structure. For this reason the degree to which flexural and shearing distortions of the cantilever beam representing the building assume importance for the period determinations is not obvious quantitatively. Similarly, the type of ground deformation or elastic yielding that must be considered varies with the slenderness of the building as well as with the type of foundation and ground. The present study attempts to show that a rational treatment of the problem becomes greatly involved and therefore impractical if too many factors have to be taken into account. Moreover, the study enables the investigator to form an intelligent estimate of the relative importance of the influence on the periods of the factors that he is forced to neglect.

First Steps of the Forest Survey in California

First Steps of the Forest Survey in California

Amebiasis in Panama and California with Special Reference to Incidence and Treatment 1

SummaryA relatively high incidence of amebiasis (E. histolytica) presumably exists in Guatemala, Costa Rica, and the interior of Panama. In the Hospital Santo Tomas in Panama City, however, only 13.9 per cent of a selected group of patients (from the men's medical, women's medical, and obstetrical wards) were found to harbor E. histolytica. In recent California surveys where comparable laboratory methods were used (wet fixed iron hemotoxylin stained smears examined) there has been reported an incidence of 9.8 to 16 per cent. Eighty-eight of the 101 Panama cases of amebiasis found on 1834 examinations were treated with Carbarsone (carbamino-phenyl-arsonic acid containing 28.8 per cent arsenic) given orally in average dosage of 5.0 grams for ten days. This amebacide was effective without adjuvant in clearing all but one of 37 cases that could be followed during the month of therapy. No evidence of arsenic toxicity was noted when total doses to 300 mgm. per kilogram were given orally.

Some Results of Magnetometer Surveys in California

The writer describes magnetic conditions associated with some typical structural features in California,--an anticline, a syncline, an outstanding magnetic feature in the San Joaquin Valley, a buried fault near Mount Diablo, a part of Ventura County, and Kettleman Hills.

Progress of the Geological Survey of California

Progress of the Geological Survey of California

Progress of the Geological Survey of California

Progress of the Geological Survey of California

Results of Elastic-Wave Surveys in California and Elsewhere

Geophysical exploration in loosely consolidated materials presents a problem different from similar surveys in areas where there is a marked differentiation between beds. However, even in these loosely consolidated materials, velocity of wave transmission varies in general with depth of original overburden, and correlations based on this fact have been found reliable. Apparatus has been specially developed to meet the requirements of operation in such materials.

A Geological Survey of California

A Geological Survey of California

A Geological Survey of California

A Geological Survey of California

A State-Wide Malaria-Mosquito Survey of California

Journal Article A State-Wide Malaria-Mosquito Survey of California Get access William B. Herms William B. Herms Associate Professor of Parasitology, University of California, and Consulting Parasitologist, of the California State Board of Health Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Economic Entomology, Volume 10, Issue 3, 1 June 1917, Pages 359–370, https://doi.org/10.1093/jee/10.3.359 Published: 01 June 1917

Ethnological and Archeological Survey of California

Ethnological and Archeological Survey of California

Mountaineering in the Sierra Nevada

A bona fide classic, originally published in 1872, Mountaineering in the Sierra Nevada is still exciting reading. It describes the perils and pleasures experienced by Clarence King (1842-1901) while conducting the first geological survey of California in the 1860s. His language was equal to the marvels he found, and here with unfading brilliance are his accounts of scaling such mountains as Tyndall, Shasta, and Whitney. The chapters on the Yosemite Valley and surrounding High Sierras were written while he was surveying the boundaries of a newly designated national park. There are also delightful vignettes of western characters, including a Sierra artist and a family of Pike County hog farmers. Clarence King, who in 1879 became the first director of the United States Geological Survey, will always be remembered for Mountaineering in the Sierra Nevada, which was praised by Wallace Stegner, Van Wyck Brooks, and Henry Seidel Canby as a watermark of frontier literature.This 1935 edition was introduced and edited by Francis P. Farquhar, editor of the Sierra Club Bulletin from 1926 to 1946.

Geology of the Taylorville Region of California

Part I—The Geologic Column. Introduction. Reconnoissance of the California Survey . — The Taylorville region of Plumas county, California, lies in the Sierra Nevada immediately north of the fortieth parallel. Reconnoitering parties of the California geological survey passed through the region in 1861 and 1863* and observed slates and sandstones, sometimes hut little metamorphosed, also hard lava and granitic masses, and reported that “This part of the country is principally occupied by the metamorphic rocks over an area of about thirty miles in diameter.” It is “Almost entirely surrounded by volcanic materials, the great lava streams which have come down from Lassen peak on the north and Pilot peak on the south uniting with the volcanic crest of the Sierra so as to cover the slates around three-quarters of the circumference of the circle.” The state survey party in 1863 consisted of Messrs Brewer and King, who made two very important . . .

The Water-Birds of North America

EXPECTATION was roused some years since when tidings came that the “North American Birds” of Prof. Baird, Dr. Brewer, and Mr. Ridgway, of which three volumes had been brought out in 1874, was in process of completion, and at last there appeared two quartos of goodly size under the title of “The Water-Birds of North America,” which are not only the sequel to the work just named, but are also issued in continuation of the publications of the Geological Survey of California, of which a single volume on the land-birds of that State, edited by Prof. Baird from the notes of Dr. J. G. Cooper, saw the light in 1870. But, to complicate the matter further, the two quartos now before us form vols. xii. and xiii. of the “Memoirs of the Museum of Comparative Zoology” at Harvard. How all this came about is explained in the introduction by Prof. Whitney, the Californian State Geologist; but the only part that need concern us is the not surprising but still much-to-be-regretted fact that the cost of bringing out the volumes treating of the land-birds of North America was so great as to deter the publishers from continuing the work at their own risk. Most fortunately, then, the combination just mentioned was effected with the result we now see; but it still remains a reproach and humiliation to those interested in birds—not only in North America alone but all the world over—that so excellent a performance was not more encouraged by them. The obstinacy of the public in preferring a bad book to a good one is perhaps observable in almost every science, but that this obstinacy is nowhere more marked than in the case of natural history, and of ornithology in particular may be because it is one of the most popular branches of science, and because nine-tenths of those who pursue it hardly realise the fact that it is capable of serious study. Howbeit we may be sure that the aid adage, “Populus vult decipi,” was not first uttered by a man without worldly knowledge, and to this day experience tells us that it is as true as ever. It will take a long time yet to persuade people that they had better be well informed by an author who writes a book because he knows his subject, than by a badly-informed one who gets up his subject in order to write a book about it—though even this is perhaps saying too much, for many an author, on ornithology at least, has never taken the trouble to learn the rudiments of what he pretends to teach, and if he have but enough self-assurance he will get his claim to instruct allowed by those who are more ignorant than he is.