552 SUMMARY OF CUERENT RESEARCHES RELATING TO 



D. M. Bertrand * have isolated an organism, resembling Friedlander's 

 bacilhis, to which, on the grounds of its biochemical properties, they 

 have given the name Bacillus aminophilus uitestinalis. This organism 

 has the power of breaking up histidin, and forming, amongst other 

 products, a highly toxic ptomaine which has been identified as /8-imidazol- 

 ethylamine. 



Lymphocytozoon CobaysB. — The presence of inclusions within the 

 large mononuclear cells of the guinea-pig's blood was first noticed by 

 Kurloff. Schilling recently made a study of these structures, and con- 

 sidered that they must be classed with the Chlamydozoa. E. H. Ross f 

 in the present communication, gives an account of his application of the 

 new jelly methods associated with his name to the investigation of the 

 development of this parasite. His work confirms the view that these 

 bodies are in fact parasites inhabiting the mononuclear cells of the 

 guinea-pig's blood. They have an intracorpuscular stage, and ultimately 

 give rise to free-swimming spirochsete-like bodies, which may be gametes. 



* Comptes Rendus, cliv. (1912) pp. 1643-5. 

 t Proc. Roy. Soc, B, Ixxxv. (1912) p. 67-72. 



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