AGRIOITLTITRAL ENGINEERING. 1023 



results of the antlior's experiments indicate that l)onillon cultures of the bacillus of 

 fowl cholera may produce a hemolysin wliicli occurs in maxinunn quantity after the 

 material has been maintained for \'2 days ata temperature of 37° C. The hemolysin, 

 while not especiall\' resistant toward higher temperatures, appeared to withstand 

 iieat until subjected to a temperature of 70° C. for h hour. Hemolysin thus obtained 

 has no toxic effect ujion animals and its formation does not precede the agglutina- 

 tions of the red blood cor})uscles. Its hemolytic effect was greatest upon the red 

 blood c irpuscles of ra]>bits and less pronounced upon those of guinea pigs and fowls. 



A new disease of poultry, E. Thierry {Jour. Agr. Prat., v. ser., 7 {1904), No. 5, 

 pp. 150, 151).- — The author gives a brief description of fowl plague, with particular 

 reference to the symptoms which differentiate this disease from fowl cholera. Notes 

 are also presented on the distribution of the disease in various parts of Europe. 



Spirillosis in g-eese, Ducloux {Rec. Med. Vti., 8. ser., 10 {1903), No. 16, pp. SCO, 

 ■301). — Notes are given on a disease of geese due to infection with Spirochxte anserina. 

 The disease prevails most extensively in young geese and its course and development 

 are very rapid. The symptoms are progressive weakness, diarrhea, and elevation of 

 tem]>erature. Death almost always occurs as the result of infection. The disease 

 may also be transmitted to ducks. 



The nonidentity of human and avian diphtheria, C. Guerin {liec. Med. 

 17/., .v. ,s'er., 10 {1903), No. 1, pp. 20-2S) .—The literature of this subject is briefly 

 reviewed, with special reference to a determination of the nature of the organism 

 wjiich causes avian diphtheria. This organism is believed to belong to the genus 

 Pasteurella, but to be distinct from the cause of human diphtheria. 



Epidermophyton gallinae, L. Palmans {Bid. Agr. {^Brussels], 19 {1903), No. 6, 

 pp. IJOG-IJOS). — Tins parasitic fungus, which has also been referred to the genus 

 Lophophyton, is the cause of a skin disease of the head of fowls. It apparently does 

 not attack other animals. The author found that it was a comparatively simple 

 matter to cultivate this organism on various nutrient media, and notes are given on 

 its behavior in artificial cultures. The disease may be successfully combated by 

 treating the affected parts of fowls with solutions of various antiseptics. 



AGRICULTURAL ENGINEERING. 



The official proceedings of the Eleventh National Irrigation Congress, 

 held at Ogden, Utah, September 15-18, 1903, edited ])y G. McClurg {Proc. 

 Not. Irrifj. Cong., 1903, pp. 47..\ fign. 49). — Tliis includes the organization, official call, 

 constitution, a general review of the proceedings, and the minutes of the various 

 sessions, including l^esides addresses of welcome, message from the President, reports 

 of committees, resolutions, etc., the following addresses and papers: President's 

 Address, by W. A. Clark; The Twin Ideas of Irrigation and the Conservation of 

 Water for the Prevention of Floods, by J. R. Burton; Relation of Irrigation to Inter- 

 nal Trade and Commerce, by T. G. Haley; Colonization and Irrigation, by C. E. 

 Wantland, J. M. Carson, J. H. Smith, C. C. Pardee, and F. Booth-Tucker; The 

 Repeal of Some of Our Land Laws, by P. Gi])Son; Value and Importance of the 

 Desert Land Law, by F. Mondell; The X'tilization of the Public Grazing Lands of 

 the United States, by W. M. Wooldridge; State Cooperation in National Irrigation, 

 by F. Newlands; Irrigation Investigations made l)y the United States Department 

 of Agriculture, by James Wilson; Irrigation as Shown at the World's Fair, by F. W. 

 Taylor; Tlie Victories of Peace, by G. H. Maxwell; The Influence of Irrigation on 

 the American Ideal, by W. E. Smythe; Relation of National Irrigation to Local 

 Prol)lems, l)y F. E. Brooks; Alkali Reclamation, byT. H. Means; Forests and Water 

 Su])i)ly, by F. H. Newell; Forestry, by G. Pinchot; Forest Reserves in Utah, by 

 A. F. Potter; Irrigation in Utah, by A. F. Doremus; Irrigation Investigations of the 

 United States Department of Agriculture, by W. H. Beal; The Irrigation Investiga- 

 tion of the Utah Experiment Station, by J. A. Widtsoe; Tlic Vnhie of the Studyof 



