1887-8S.] Freezing and Embedding Microtome. 



XIV.— ^ NEW FORM OF FREEZING AND 

 EMBEDDINO MICROTOME. 



By Mr ALEX. FRAZER, M.A., 



SCIENTIFIC INSTRUMENT MAKER. 



{Read Ai^ril 25, ISSS. ) 



This instrument differs from the original Catbcart microtome 

 in the following points : (1) The principal screw is of larger 

 diameter than in the old form, and has a head of considerably 

 greater size ; (2) the wooden frame is now made with a pro- 

 jecting part, by means of which the instrument may be 



clamped on loth sides, and two clamps are now supplied ; (3) 

 the freezing-plate is now made of circular shape, is supported 

 on three pillars, and is provided with a ledge to prevent the 

 ether getting to the upper side of the plate ; (4) the construc- 

 tion of the instrument has been so modified that it may be 



VOL. II. 



