Fiji Disease Research Articles

AN INSECT VECTOR OF THE FIJI DISEASE OF SUGAR CANE

In June, I928, the writer first attempted to transmit the Fiji disease of sugar cane (Saccharum offciCarul/t L.) by the use of insect vectors. The earlier trials to this end were made at Los Bafios, P. I., at intervals during I928-I930. The insects used were two species of aphid (Aphis naidis Fitch.2 and A . sacclari Zehntner) and one coccid (Trionymnus sacchari [Cockerell] ). Some Fiji disease appeared in the experimental canes with each of the three insects, respectively. Although all of the checks remained healthy, these results were not considered really significant, since in all cases the experimental canes were transplanted to unprotected garden plots. Moreover, in all except the last trial two-node cuttings were used as seed canes. Inasmuch asFiji disease occurred on adjacent non-experimental canes, it was concluded that the appearance of the Fiji disease as noted might be attributed to conditions or agencies other than the insects used experimentally. In 193I 3 it was possible to construct adequate insect-proof chambers, designed by the writer, which, with the properly guarded use of single-node cuttings, justify confidence in the experimental methods used in I93I-32 and the validity of conclusions reached. In these later experiments tlhe leaf-hopper Perkinsiella vastatrix Breddin (Delphacidae) was tested as an agent of transmission.4

An Insect Vector of the Fiji Disease of Sugar Cane

An Insect Vector of the Fiji Disease of Sugar Cane

CARBON TETRACHLORID IN THE TREATMENT OF HOOKWORM DISEASE

In a recent issue ofThe JournalI 1 reported on the use of carbon tetrachlorid in the treatment of 20,000 cases of hookworm disease in Fiji. My observations were based on experiments conducted up to June 1, 1922. By the end of October, 1922, we had treated an additional 30,000 cases, making 50,000 in all. The picture presented by the earlier article, while true in the light of experience up to the time of writing, may give the unwarranted impression that carbon tetrachlorid is entirely harmless. I desire, therefore, to submit here the results of our further experience in Fiji with this drug. We continued the exclusive use of carbon tetrachlorid in the treatment of intestinal parasites with good results till we had treated 42,000 cases. The dosage used was 0.2 c.c. (3 minims) of the drug for each year of age up to 15 years. Adults were given

CARBON TETRACHLORID IN THE TREATMENT OF HOOKWORM DISEASE

In a recent issue ofThe JournalI 1 reported on the use of carbon tetrachlorid in the treatment of 20,000 cases of hookworm disease in Fiji. My observations were based on experiments conducted up to June 1, 1922. By the end of October, 1922, we had treated an additional 30,000 cases, making 50,000 in all. The picture presented by the earlier article, while true in the light of experience up to the time of writing, may give the unwarranted impression that carbon tetrachlorid is entirely harmless. I desire, therefore, to submit here the results of our further experience in Fiji with this drug. We continued the exclusive use of carbon tetrachlorid in the treatment of intestinal parasites with good results till we had treated 42,000 cases. The dosage used was 0.2 c.c. (3 minims) of the drug for each year of age up to 15 years. Adults were given

Banana Disease in Fiji

Banana Disease in Fiji