994 EXPERIMENT STATION RECORD, 



Protective inoculation against hog cholera, Foth {Brrlin. Thierdrztl. Wchnschr., 

 1900, Xo. 4S, pp. 566-.56S). — The author ivport.s the results of inoculating 4,909 pigs. 

 The value of Landsberg and Prenzlau vaccines in actual cases of hog cholera is 

 believed to be problematical. Xo reaction occurred in any of the cases of protective 

 vaccination, and it was observed that hog cholera did not appear among herds which 

 had been previously vaccinate<l with Susserin. 



The sale and purchase of animals aflFected with contagious diseases, P. 

 Bkuxo {dlor. R. Soc. AcanJ. V>t. Jtal., 40 [1000), Xo. 50, pp. 1187-1190) .—The author 

 gives a brief discussion of the extent of traffic in diseased animals, and suggests the 

 desirability of a law regulating this business. 



The pathological anatomy of pigeon pox, P. Polowixkin {Arch. Wiss. u. Prakt. 

 Tliierli., ^H (1900) , Xo. 1-2, pp. 86-109, pi. l,Jigs. 9) . — This disease has been known by 

 a great variety of names, of which the author prefers EpitheUoma contagiosum. The 

 results of the author's investigations may be briefly stated as follows: The disease is 

 of a benign nature and is not related to the smallpox of mammals. The swellings 

 which are characteristic of the disease are to be considered as products of degenera- 

 tion and not as tumors caused by parasitic organisms of animal nature. Micro- 

 organisms are found in these swellings, and the disease may be produced by inocula- 

 tion of healthy birds with such organisms. The serum of pigeons which have 

 recovered from the disease has the property of agglutinating the pathogenic organism. 



TECHNOLOGY. 



The manufacture of starch from potatoes and cassava, H. W. 



Wiley (U. S. Dept. A<jv.^ Division of CJa inisti'ij Ihil. oS^ pp. J^S^ph. 

 S,j7(/s. 17). — This bulletin reports oliservations and data on the manu- 

 facture of starch from potatoes in Maine and other parts of the United 

 States, together with descriptions of machinery and processes for the 

 manufacture of starch from potatoes and cassava. The bulletin treats 

 of the amount of potato starch produced, the soil, fertilizers, and 

 methods of culture employed in regions where potatoes are grown 

 for starch making, especially in Aroostook County, Maine, the chem- 

 ical composition of the potatoes grown, the use of potatoes for alcohol 

 milking, the microscopic appearance and the uses of the starch pro- 

 duced; and of cassava as an article of food, microscopic forms of cas- 

 sava starch, culture of cassava, plans for a cassava or potato starch 

 factor}', and present status of the cassava industry in Florida. 



The total production of potato starch in the United States in 1S99 was 

 15,5(J0 tons, of which '.t,(»0() tons was made in New Hampshire and 

 Maine (6,(J0() tons in Aroostook County), -100 tons in New York, and 

 (i,100 tons in Wisconsin and other Western States. The anal_v.ses 

 reported show that the starch content of Maine-grown potatoes is not as 

 large as that of potatoes ordinarily used for starch making in Germany 

 and other parts of Europe. This is believed to be due to the fact that 

 potatoes rarely mature naturally in Aroostook County, l)ut the tops 

 are usually killed by blight or frost. As a result the maxinuun starch 

 is probably not dovolo]i(Ml. 



The composition of American wines, AV. D. Bigelow ( U. S. 

 D<pt. A(jr., Jjivislon of Cltainisfiu/ Ilnl . J.9, p2>- ^^^)- — This is a com- 



