CH. A"] 



SERIAL SECTIONS OF EMBRYOS 



323 



§ 486. Labeling Serial Sections.— The label of a slide on 

 which serial sections are mounted should contain at least the 

 following : 



The name of the embryo and the number of the series ; the 

 number of the slide of that series ; the thickness of the sections, 

 and the number of the first and last section on the slide ; the date. 

 It is also a convenience to have the information repeated in part on 

 the left end. 



Fig. 256. Removable mechanical stage. It fits any square stage and has 

 the advantage of large motion in both directions making it especially useful 

 for the study of serial sections. { Cut loaned by the Spencer Lens Co. ) 



REFERENCES 



For sectioning staining, etc., in the various ways see : Lee, Mann, 

 Ehrlich, Mallory and Wright, The Microscopic Journals. 



For the preparation of Embryos see Foster and Balfour's Elements of 

 Embryology. Minot's Laboratory Text-Book of Embryology. Consult also 

 the general Bibliography at the end. 



