536 Dr. WALTER ADAM on the 
There is also an identity in the excesses of the sums of the 
middle breadths, and of the sums of the middle thicknesses in 
the atlantal limbs, over the sums of the similar dimensions in 
the sacral limbs. 
It may be further remarked, that if to the four girths of the 
sacral limbs, that of the calcaneum be added, the sum of the 
five sacral girths is seven eighths of the sum of the girths of the 
four atlantal limbs : 
The sum of the five sacral girths being 77 proportional parts. 
The sum of the four atlantal girths being 88 proportional 
parts. 
It would be tedious to dwell on the proportions of the various 
processes and elevations of the bones of the limbs. In the 
accompanying Tables, osteologists will find their dimensions in 
the Bactrian Camel noted with every possible accuracy. 
The proportions of the rudimentary bones of the feet, of the 
carpus and tarsus, and of the ungual bones, are withheld; as, 
in an articulated specimen, these bones cannot be exactly mea- 
sured. 
From what has been now stated, it appears that throughout 
the dimensions of the bones of the Bactrian Camel there is such 
an agreement, that many of the dimensions are continued pro- 
portionals, and that the mutual relations of nearly all admit of 
a very simple expression. 
Corresponding relations have been found to prevail in the 
. bones of every species of animal examined by the writer of this 
paper. The prosecution of his investigations has been thwarted 
by unforeseen obstacles. Under more favourable circumstances, 
should what has been observed in the Camel be fully verified in 
other animals, it will result, 
1.. That 
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