1 882.] Microscopy. 1041 



ing ice and sait in little spaces close to the object, or pumping the 

 spray of rhigolene or ether, will be glad to welcome a contrivance 

 fitted to give the best results in cutting frozen tissues with uni- 

 formity, certainty and ease. The microtome recently contrived 

 by Thomas Taylor, M.D., of the Department of Agriculture, at 

 Washington, seems able to accomplish this. As shown bv the 



such 



! ,t the: >;: 



P the object-carrier "A/* which is a hollow 



pill-box shaped cylinder of thin metal, upon 



lated as desired, or stopped altogether, by 

 placing a spring clip upon the elastic tube. 

 Economy of trouble, as well as of expense, 





^^^ 



may often be sec 



ured by returning the used water 



to the upper rec 

 extent without 

 sometimes posit 

 tense a cold. S 

 water, or other s 



letriment to the process, and is 



vely useful in preventing too in- b\ 



oluti' is ciu.ibl H hvcvMg to a ^CLi: 



proper degree of 



carrierfthe freezing of a drop 

 ponthe top of the object indic.it- 



