54° THE RABBIT ciiAr. x 



end of the humerus, and at the distal end of the fore-arm divides into 

 four tendons, which pass through the annular ligament to digits 2-5 

 and are inserted into the middle and distal phalanges. Note the 

 sesamoid bones on the palmar side of the joints of the digits. 



J. Side dissection. 



Obtain another rabbit, and make a dissection from the side (compare 

 Fig. 125) as directed in the case of the dogfish and frog (p. 464). 

 Make out the structure and relations of all the principal organs once 

 more, and sketch your dissection. 



K. Transverse sections. 



The examination of transverse sections is most easily and satisfactorily 

 done by preparing microscopical sections of a foetus (p. 532) not more 

 than a couple of inches in length, as directed in the case of the young 

 dogfish (p. 464) : a foetal rat or mouse will answer the purpose equally 

 well. 



With a sharp knife, cut transverse sections, alxjut gth inch thick, from 

 the following regions : a, snout ; b, cranial region ; c, neck ; d, thorax ; 

 and e, abdomen. Stain and imbed, and then cut and mount one or 

 two sections of each, examining them with a low power and making 

 sketches. 



Then put on the high "power, and make out as much as possible of 

 the histolog)' of the various organs. 



