174 REVIEW. 



dexterity, and objects to all forms of section-cutters or mi- 

 crotomes, of which he gives uo description. The American 

 translator has, however, inserted a description of a section- 

 cutter invented by Dr. Edward Curtis, of New York, which 

 resembles, in the main, the instrument of Drs. Stirling and 

 Rutherford, but without the freezing apparatus, and having 

 this peculiarity, that the knife is held in a frame, which 

 elevates it slightly above the table of the " holder,^' in which 

 the object to be cut is contained. The table is, moreover, 

 made of glass, an improvement recently suggested by Mr. 

 Needham in the English microtome. 



The remaining part of Dr. Frey^s work is devoted to special 

 histological methods, and will be found most useful by 

 workers at normal or pathological histology ; for botanists 

 and zoologists it is, of course, less suited. 



The translation is, on the whole, fairly executed, though 

 we think the principle of liter alness has been carried to excess, 

 and has certainly often involved a sacrifice of elegance as well 

 as sometimes of clearness. With regard to the form of the 

 book, we must only regret that it has not been found possible 

 to make it smaller and less expensive. 



