792 



EXPERIMENT STATION EECORD. 



at least lialf an hour after administration before deep sleep is prodnced, but 

 the sleep is then maintained up to 6 hours. 



Further investigation upon white diarrhea of chicks, F. B. Hadley and 

 W. F. KiRKPATRicK (Successful Poultry Jour., 1.) {1909}, No. 4, pp. IS, 19).— \ 

 paper read at the meeting of the International Association of Intstructors and 

 Investigators of Poultry Husbandry, at Guelph, Canada, in which the authors 

 report upon experiments conducted at the Rhode Island Station (E. S. R., 21, 

 p. 387). The following are the conclusions drawn: 



" The first evident fact is that Coccidimii cuniciili, the cause of blackhead in 

 turkeys, does, when fed experimentally in pure culture to young chicks 2 days 

 old, cause a severe, and in every case fatal, disease, which is in all respects 

 similar to the affection known by poultrymen as white diarrhea. 



"The second fact to be noted is, that the Bacterium pullorum, alleged by 

 Rettger to be the cause of white diarrhea, when fed by means of bouillon cul- 

 tures to young chicks 2 days old, did not in any instance produce any disease 

 nor any manifestation of white diarrhea. 



" The third fact to be observed, and the most important one of all, is that by 

 the use of sterilized food, sterilized water, and aseptic conditions in the 

 brooders, the presence of white diarrhea or of any other intestinal disease was 

 absolutely prevented." 



The dissection of fowls, F, C. Harrison {Rel. FouUnj Jour., 16 (1909), No. 

 If, pp. Ji66, 467, figs. 2). — Instructions are given for the dissection of fowls and 

 the recognition of abnormal conditions. 



The practical study of malaria and other blood parasites, J. W. W. Stephens 

 and S. R. Christophers (London, 1908, 3. ed., pp. IV+414+XIV, pis. 6, figs. 

 128). — A third revised and enlarged edition of this work (E. S. R., 15, p. 983). 

 The pathogenic trypanosomes, Hremamoebidje, and si>irochetes are described 

 more at length than in the earlier edition. The chapters on the ticks have been 

 rewritten and much extended. 



Report on the prevention of malaria in Mauritius, R. Ross (London, 1909, 

 pp. XTI+202, pis. l.'i, map 1 ; rev. in Lancet [London], 1909, If, No. 1, pp. 22; 

 Bui. Inst. Pasteur, 7 (1909), No. 3, pp. 13',, i3.5).— The author, who spent 3 

 months on the island investigating the problem, is of the opinion that in all 

 likelihood malaria was not endemic in the colony before lSG.j. The particular 

 mosquito responsible for transmitting the disease in Mauritius is Pyrctophorus 

 costalis, which was probably brought to this island by some Aessel. 



Notes on some Australian parasites, T. H. Johnston (Ayr. Gaz. N. S. Wales, 

 20 (1909), No. 7, pp. 581-584). — This is a brief account of the entozoa infesting 

 human beings and live stock in Australia. 



The intestinal worms of three hundred and eighty-five Filipino women and 

 children in Manila, P. E. Garrison and R. Llamas (PliUippine Jour. Sci., B. 

 Med. ScL, 4 (1909), No. 3, pp. 185, 186). — A comparison of the frequency of 

 these parasites in men from all over the islands and women and children in 

 Manila is shown in the following table: 



Frequency of parasites. 



