ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



823 



and the specimen is to be retained in the imbedding mass, absolute 

 alcohol for dehydrating and oil of cloves for clearing are to be dis- 

 carded, for they both dissolve the celloidin, and alcohol of 96 per 

 cent, and oil of bergamot, oil of sanders, or oil of origanum used. 



Reichert's Microtomes. — The essential feature of these Micro- 

 tomes is that the object is automatically raised. 



Fig. ho. 



The carrier, to which the knife M is attached by the screw F, 

 rests on six p r)ints, for greater exactness and for reducing friction. 



