1134 EXPERIMENT STATION RECORD. 



Expt'rinieiits were carried on during wliich it was found tliat tlie fowl cholera 

 bacilli woultl multiply vigorously when inoculateil into fresli eggs. Inoculation 

 exjieriments showed that the fowl cholera 1)acilli were capable of retaining their 

 virulence for 48 hours in muck, for days in sanil, and for 7 days in sawdust. The 

 donkey was found to produce a very effective serum for fowl cholera. The fowl 

 cholera l)acilli were agglutinated by this serum when used in a dilution of 1:1600. 

 Pigeons inoculated with 0.5 cc. of the serum resisted inoculation with virulent cul- 

 tures of the fowl cholera bacilli. The symptoms, etiology, and distribution of fowl 

 j)lague are carefully described by way of comparison with fowl cholera. It was 

 found that the virus of fowl plague readily passeil through the Berkefeld and t'ham- 

 berland filters. It is l)elieved to be impossible to differentiate with certainty between 

 fowl cholera and fowl plague by means of any one test. 



Spirillosis of fowls, C. Levaditi (Ann. Inst. Pasteur, IS (1904), No. 3, pp. 129- 

 149, ])l. 1). — The literature relating to this subject is briefly reviewed by the author. 

 It was found that when a small quantity of l)lood containing the virus of the disease 

 was introduced subcutaneously into a fowl, the spirilla could not be found in the 

 general circulation until after a period of 2 days. At the point of inoculation the 

 spiril'a were observed in large numbers for about 35 minutes, after which they grad- 

 ually disappeared. 



There seems to be no imdtiplication of the spirilla at the point of inoculation. The 

 process of multiplication in the general circulation, however, increases until the 

 greatest quantity of spirilla are found at the end of the fifth or sixth day. The 

 serum of fowls which recover possesses quite pronounced agglutinating power. It 

 also brings about at the same time an agglomeration of the white blood corpuscles. 

 The sudden death of a number of fowls which were treated with the serum of recov- 

 ered birds was attributed to the agglutinating action of this serum. The author sug- 

 gests that their death was thus caused by embolism as the result of the existence of 

 the agglutinated masses of spirilla and white blood corpuscles. 



Minor ailments of poultry, C. E. J. Walkey {.Tour. Bd. Agr. \^London'], 10 {1904), 

 No. 4, pp. 476-487). — Among the more important predisposing causes of diseases in 

 poultry the author mentions damp hou. v.. , excessive drafts, filth, and careless breed- 

 ing. Practical recommendations w^ere made concerning the treatment of apoplexy, 

 bronchitis, bumble-foot, colds, leg weakness, pneumonia, scaly leg, etc. Formulas 

 are given for preparing suitable remedies in treating these various troubles. 



Poultry diseases common in Montana, H. C. Gardiner {Montana Sta. Bui. 50, 

 pp. 191-196). — Brief notes on the symjitoms, etiology, and means of combating roup, 

 catarrh, and gapes, together with a brief account of chicken lice. 



AGRICULTURAL ENGINEERING. 



Agricultural engineering-, S. Fraser {Cornell Countryman, 1 {1904) , No. 6, 

 pp. 170-173, figs. 2). — A note on the development of instruction and investigation in 

 this line in the United States. 



The field for study and development of rural engineering in Nebraska 

 {AgriraUnre [AV/^ro-s/.-o], 3 {1904), No. :?, pp. S-13). — A brief general discussion. 



The natural features and economic development of the Sandusky, Mau- 

 mee, Muskingum, and Miami drainage areas in Ohio, B. H. Flvnx and .Mar- 

 garet 8. Flvxx {V. S. Geol. Survey, Water Supply and Irrig. Paper No. 91, pp. 130, 

 fig^. 11). — This paper, which treats of the natural features and development of the 

 four principal drainage areas of Ohi,;), contains valuable data with reference to the 

 flow of the Maumee, Sandusky, Miami, and Muskingum rivers, and the natural 

 advantages they offer with reference to water power and domestic water supply. 

 "Of particular interest is that part of the paper which deali; with the early history 

 of the water powers, their general relation to the canal systems of Ohio, and the 



