PLATE XXI. 



FiS. 



Cement for making minute dissections under water 



Pig. 134. 



:-d cork upon which objects for dissection 

 may be pinned out. p. 79. 



Fig. 135. 



Compressorium for pressing or tearing rip tissues 

 under the microscope. ] 



Jig. 137. 



Fis*. 136. 



An improved form of compressorium (Mr. Highley). p. 81. 



Instrument for cutting thin sections 

 of wood, kc. p. 84. 



Fine saw for sawing bone and othei 



[To face paee 82. 



