382 . EXPERIMENT STATION RECORD. 



Nodular disease of the intestines of cattle, W. Jowett (Agr. Jour. Union 

 So. Africa, 2 {1911), lS!o. 5, i)p. 581-587, figs. .2).— While nodular disease of the 

 intestines of sheep is widely spread througbout South Africa, the author reports 

 that but little attention appears to have been paid thus far to an almost identical 

 nodular disease in the intestines of bovines, which is met with quite frequently 

 in Capetown and the neighboring districts in the Cape Province. Whether the 

 parasite concerned in South Africa is CEsophagostomum inflatnm or 0. radiatnni 

 has not been determined. 



The treatment of red water in cattle with trypanblue, A. Theiler {Agr. 

 Jour. Union So. Africa, 2 {1911), No. 5, pp. 562-569). — Following a brief review 

 of the subject, the author reports personal investigations which confirm earlier 

 reports of the value of trypanblue in controlling and reducing the danger re- 

 sulting from the artificial immunization of imported cattle against redwater. 

 He considers the advantage of the drug treatment against redwater to lie in its 

 use in the artificial immunization of imported cattle against the disease. It is 

 pointed out that in immunizing cattle against Piroplasma higctninum care must 

 be taken that Anaphisma marginalc also is not inoculated, since it can not be 

 successfully dealt with by the trypanblue treatment. 



Some observations on the blood of dairy cows in tick-infested regions, 

 R. P. HiBBAKD and D. C. Neal {Jour. Infect. Diseases, 9 {1911), No. 3, pp. 324- 

 342). — The authors' observations of the blood of 15 animals in a dairy herd 

 gave results which, when compared with those of other observers, showed some 

 marked differences, the most apparent of those noted being as follows : " The 

 number of whites is appreciably larger. The number and percentage of polynu- 

 clears are smaller. The number and percentage of lymphocytes are larger. 

 Other differences, though not so apparent and possibly of very little value, are 

 noted as follows: The number and percentage of mast cells have decreased, 

 while the number and percentage of eosinophiles and mononuclears have 

 increased." 



These same differences were observed when the animals were further exam- 

 ined at various times and over a period of 2 years, and when the results were 

 compared with the results with a set of 15 animals from the general herd. 

 Similar differences were observed in 41 cows in the general herd, and in 5 

 Ayrshire heifers imported from Pennsylvania and examined 30 days after 

 having been immunized. 



Directions for constructing a vat, and dipping cattle to destroy ticks, 

 H. W. Gbaybill and W. P. Ellenbergee ( U. S. Dcpt. Agr., Bur. Ardm. Indus. 

 Circ. 1S3, pp. 15, fig. 1). — This circular gives directions for preparing arsenical 

 dips and for dipping cattle, and plans and specifications for the construction 

 of a suitable dipping vat. It has been prepared to meet the need for such infor- 

 mation in connection with the work being done by the Bureau of Animal 

 Industry in cooperation with the state and local authorities in the eradication 

 of the cattle tick. 



Oxidation of arsenites to arsenates in cattle-dipping tanks, W. F. Cooper 

 and G. A. Freak {Jour. Ag7\ Scl, 4 {1911), No. 2, pp. 177-181).— The authors 

 confirm the results of Briinnich ^ as to the oxidation of arsenites to arsenates, 

 the reaction having taken place in the presence of wood tar and also of cresylic 

 acids. See also a previous note by Fuller (E. S. R., 26, p. 174). 



A simple, effective, and inexpensive method of treating the arsenical dip- 

 ping solution before emptying vat for cleaning, W. H. Dalrymple and A. P. 

 Kerr {Louisiana Stas. Bui. 132, pp. 3-8, figs. 2). — The authors find that the 

 danger of contaminating the water supply or vegetation through the disposal 



iRpt. Austral. Assoc. Adv. Sci., 12 (1909), pp. 129-133. 



