226 Animal Micrology 



AMPHIOXUS 



Specimens must ordinarily be secured from dealers. The ani- 

 mals should be stained entire in borax-carmine (reagent 32, 

 Appendix B) and sectioned in celloidin. The most instructive 

 sections are cross-sections of a female with well developed gonads, 

 and longitudinal sections of small individuals. Mounts of entire 

 small specimens should also be made. 



VERTEBRATA 



For any of the tissues of vertebrates which teachers may desire 

 to prepare, ample directions are given in Appendix C. 



For Demonstration of Circulation of the Blood in the frog, see 

 chap. xiv. 



