Hygienic Point Of View Research Articles

COMPARATIVE LONGEVITY.

The London<i>Lancet</i>calls attention to the fact of the large number of deaths occurring in well-to-do persons about the beginning of the seventh decade from diseases which are evidences of degeneration and premature senility, while other individuals pass on to the eighth and ninth decades in apparent health. It suggests that those who die thus early after the sixtieth year have indulged their appetites and lived unreasonably from a hygienic point of view. Considering that sixty years is a little beyond the average of human life and the numerous complications of heredity and incidental diseases, it seems that the position taken is a little too positive. People in prosperous circumstances that die at sixty have undoubtedly lived unhygienically in some respects, since no one lives according to the highest sanitary rules; their delinquencies may have been not the mere indulgences of their appetites, but the conditions through which, from

THE SANITARY RESULTS OF OUR CONQUESTS AND ANNEXATIONS.

The addition of tropical territories and population to our national dominion has certain medical and sanitary bearings that are well worthy of careful consideration. This statement does not necessarily imply that such additions involve any elements of national peril in a medical point of view, though that has been urged as a fact by those opposed to such territorial expansion, but simply that it enlarges the range of our national hygienic supervision and brings some sanitary problems more nearly home to us than was formerly the case. Instead of involving new dangers the extension of our rule ought to eradicate existing ones to a large extent and favorably modify others where their complete avoidance is impossible. Warm countries are commonly regarded as unhealthy, and they certainly have some special disadvantages in a hygienic point of view, but it is a fact that ordinary sanitary precautions are hardly anywhere so habitually

Gas Lighting Considered from a Hygienic Point of View

Gas Lighting Considered from a Hygienic Point of View

XXIX.—On the Variations of the Amount of Carbonic Acid in the Ground-Air (Grund-Luft of Pettenkofer)

The chemical examination of ground-air, i.e., the air which is contained in the pores of the soil, was first made by Boussingault and Levy in 1853. Their results, however, attracted little attention till Pettenkofer, in 1857, pointed out that the determination of the amount of carbonic acid in the air of a given soil might be used as a means of estimating the organic decomposition going on there. In 1871 he first published his results, and since that time the subject has been worked at by many investigators both from the agricultural and hygienic point of view, including in the latter class Fleck at Dresden, Eodor at Buda-Pesth, Hesse in Saxony, and Nicholls in America. As researches of this nature have not attracted much attention in this country, a short account of the modus operandi may be interesting as a preliminary.

Rice Culture in Japan, Mexico, and the United States from the Hygienic Point of View

Rice Culture in Japan, Mexico, and the United States from the Hygienic Point of View