[ 733 ] 



i7- Crotogonus sp. 



1 8. Pcecilocera picta (Acrididae ... Orthoptera. 



19. Hieroglyphus furcifer. 



20. Tryxalis turrita (Do. Do.; 



21. Atractomorpha crenulata (Do. Do.) 



22. Mecopoda sp. (Do. ... Do.) 



23. Euprocnemis bramina (Do. Do.) 



CHAPTER CXXV. 



ZYMOTIC DISEASES AND REMEDIES FOR THEM. 



"\1[ 7HEN an agricultural crop or herd of animals dies out in 

 abundance without any apparent cause, the loss may 

 be supposed to be due to some microscopic organism. Pota- 

 to-rot, wheat-rust, cattle-plague, animals dying suddenly after 

 a swelling in the neck, are examples of loss due to micro- 

 organisms. When one notices any crops or animals dying 

 from some mysterious cause, one should take some fluid out 

 of a recnetly dead plant or animal from an organ that 

 appears to have undergone special decay. If the diseased 

 organ or tissue is too dry to yield any fluid, it should ; be 

 macerated with a little clean water and the fluid thus made 

 taken into a glass slide. The fluid should be spread out 

 then on a cover-glass and mounted in the usual way. The 

 specimens may then be examined leisurely for identification 

 of the epidemic. For certain epidemics protective inocula- 

 tion has been found beneficial, as for instance, (i) for anthrax, 

 (2) for fowl-cholera, (3) for charbon symptomatique (called 

 also quarter-ill, black-quarter, braxy of sheep and gloss- 

 anthrax, the disease of horses and cattle called Galdphula) 

 and (4) rabies. Protective inoculation for animals can be 

 carried on in this country if the plagues are identified, 



