294 EXPERIMENT STATION RECORD. 



.Etiology of dysentery, W. JANOWSKI (Centbl. llakt. u. Par., 1. Alt., 21 (1S97), 

 Xo. .?, pp. 8S-100, 151-158, 194-211.?, 234-255; abs. in Join-. Roy. Micros. Soc. [Loudon], 

 1897, No. 3, pp. 239,240). — As the result of a review of 84 works on the subject of 

 dysentery, it is concluded that it is caused by :i cooperation of several parasites. 

 Two forms of the disease are distinguished, (1) the ordinary form due to associated 

 bacteria; and (2) the tropical, which is probably caused by the cooperation of an 

 Amoeba and bacteria. 



Parasitological notes, lb Galli-Vaxerio (Moderno zooiataro, 1897; abs.in Centbl. 

 Bait. u. Far., 1. AM., 21 (1897), Xo. 17-18, pp. 679).— The geographical distribu- 

 tion of some Italian species of parasites is discovered. The following are note 1: 

 Actiomycea lacertce from the liver of Lacerta agilis, Cysticercusfasciolaris from the intes- 

 tines of Acciptiter nisus or Falco iinnuiculus, BothriocephaJus n.sp. from the intestine 

 of Squalius cavedanua, Heteracia papulosa from the intestines of Phasianus versicolor 

 and P.cholcliicus, Tricliocephalus uodosus from the intestines of Mus musculw, Tricho- 

 soma longicolle in the serous membrane of the ingluvies of Phasianus versicolor and 

 P. cholchicus, Filaria lobiato papilloaa larva- from the vessels of the tongue of an ox, 

 and Sarcoptes mutatis from Phasianus versicolor. 



How the bacterial organisms are studied, J. E. Lamb (Amer. Monthly Micros. 

 Jour., n. ser., IS (1897), Xo. 6, pp. 184-188). — The technique of the subject. 



Departmental committee on swine fever (Jour. Roy. A<jr. Soc. England, 3. ser., 8 

 (1897), II, pp. 367-371). — From their investigations the committee has concluded 

 that pneumonia of the pig is sporadic and not contagious or epizootic; that swine 

 erysipelas is not common in the acute or contagious form in England; and that there 

 is no epizootic disease of swine, except swine fever, in any part of the United King- 

 dom that requires to be dealt with under the act of Parliament for 1894 relating to 

 diseases of animals. 



Chicken cholera in Australia, C. J. Pound (Report relating to the microbes of 

 chicken cholera. Queensland. Australia, 1897, pp. 22, figs. 2 : abs. in Jour. Roy. Micros. Soc. 

 [London], 1S97, Xo. 3, p. 24").— The discovery of the disease in Australia is reported. 



Rational horse shoeing, K. I. Kalxixg (Ouchenie o Ratzionalnol Jcorkye losh adei. 

 Kasan, 1896, figs. 121. Revieivedin Trudi Imp. I'oln. Econ.Obsh. [Arb. K. freien bkon. 

 Ges.], 1897, L No. 2,pp. 313, 314). 



AGRICULTURAL ENGINEERING. 



Summary of mechanical tests on thirty-two species of Ameri- 

 can woods, B. E. Ferxow f U. S. Dept. Agr., Division of Forestry 

 Cir. 15, pp. 11, dgms. ;?). — A summary is given of the results of mechan- 

 ical tests conducted under the supervision of J. P>. Johnson on timber 

 from 7 species of pine, 10 of oak, 7 of hickory, 2 of elm, 2 of ash, and 1 

 each of bald cypress, white cedar, Douglas spruce, and sweet gum. 



In addition to the regular series of tests a number of special investi- 

 gations were undertaken which are reported upon at more or less 

 length. Many of the special tests were inconclusive and are to In- 

 reported upon in detail in a future publication. Among the experi- 

 ments in which apparently definite results were obtained was the bleed- 

 ing of long-leaf pine, which has already been reported.' The effect of 

 moisture on wood after seasoning was investigated, and the results 

 seemed to indicate that no material difference in strength exists, so 

 that it would be immaterial whether a given moisture condition was 

 acquired by drying or by reabsorption after having been fully sea- 



U. S. Dept. Agr., Division ol Forestry Bui. 8 | E. S. R., •".. p. 96). 





