600 SUMMABY OF CURRENT RESEARCHES RELATING TO 



The author* has been able to keep this new parasite alive for half 

 an hmir in the testicular juice, and for sixteen days in a mixture of 

 a small quantity of testicular juice and sea-salt solution. In the latter 

 it exhibits an adaptation to what approaches a marine medium. It 

 changes its mode of locomotion, twisting in a gyratory fashion on its 

 longitudinal axis, its cilia beat much more rapidly, and the endoplasm 

 becomes much clearer owing to the disappearance of accumulated reserve 

 products. 



Culture of Treponema pallidum in vitro.t — C. Lebailly has suc- 

 ceeded in keeping Treponema, pallidum Schaudinn alive for some days 

 in vitro, apart from the living organism. It continued to multiply in 

 these conditions. This may lead to fruitful experiments in the way of 

 acclimatising the micro-organism to controlled conditions. 



* Comptes Eendus, cxlv. (1907) pp. 1435-7. 

 f Op. cit., cxlvi. (1908) pp. 312-14. 



