ARCTIC ZOOLOGY. 117 



opening exists. It therefore remains for anatomical re- 

 search to account for the animal economy of the whale on 

 other principles than those hitherto adduced. 



Not having as yet seen an accurate delineation of the 

 whale, I have given one in Plate X., Fig. 5, from my own 

 observation. The many which were killed and brought 

 alongside the ship in which I sailed, besides others which I 

 saw exercising their voluntary powers in the surrounding 

 water, gives much confidence in the accuracy of this draft. 

 To such readers also as would desire an illustration of the 

 anatomy of the animal as connected with the preceding 

 remarks, I have in the same Plate, Fig. 3 and 4, given 

 some views of the hinder parts in a section of one of the 

 lumbar vertebrae and the tail. 



EXPLANATION. 



FIG. 3. 



A. Skin with epidermis. 



B. Cellular substance, called blubber. 



C. Cartilage enveloping the tendinous cells. 



D. Cells of strong muscular coating, through which the 

 tendons play. 



E. Spinal canal, enclosing a fascia of blood-vessels. 



F. Cartilaginous substance between the joints of the 

 spine. 



