ON THE GREENLAND RIGHT-WHALE. 



147 





Tons. 



cwt. 



lbs. 



Cranium 







18 



40 



Lower jaw-bones . . 







9 



18 



Sbull 



1 



7 



58 



Vertebral column 







10 



51 



Hibs 







7 



60 



Two scapula 



. 







108 



Arm- and hand-bones 







1 



94 



Sternum 











23 



Hyoid bones 











13 



Pelvic bones 











2 



Total 



2 



8 



73 



With reference to the cranium, the only point which requires notice, on its external aspect, 

 is the absence of distinct lachrymal bones. If the parts around the orbit were not still covered 

 with their thick periosteum, it might have been supposed that these thin, wedge-shaped bones had 

 been lost, as so often happens in macerated skulls ; but in reality they appear to have become 

 firmly ankylosed to the frontals, slight traces of their original separation still remaining. This 

 is remarkable, as I have met with no other instance of such a union in any whalebone-bone. 



A section through the Icaig axis of the cranium, rather to the right of the middle Une, 

 brought into view a very interesting region, of which, as it is not described in the memoir, I have 

 here given a figure one fourth the size of nature. 



The woodcut shows the bony walls of the chambers containing the olfactory organ of the 

 right side, seen from within. In common with the region of the cranium in which they are 

 lodged, they are drawn out to a remarkable length, and although possessing all the essential 

 characters of the same parts in the ordinary mammalia, they are reduced to a state of extreme 

 simplicity and insignificance compared with the proportions of the rest of the skeleton. 



Near the lower part of the anterior wall of the cerebral cavity {a) in the middle line is a 



