AND LOWER EGYPT. 155 



their common habitation in a body, in certain parts 

 of the East, is to be understood of the daman, and 

 not of the jerbo : with this addition, nevertheless, 

 that a naturalist might reasonably expect some al- 

 lowance should be made for certain exaggerations 

 in the oriental style. 



I present a table of the principal dimensions of 

 the jerbo. It is the mean term of measurements 

 taken of several subjects, and these females, be- 

 cause females first fell in my way. The difference 

 of magnitude between the sexes is besides very in- 

 considerable. 



Inches. Lines. 

 Length of the body, from the tip of 



the nose to the root of the tail — 5 6 

 Length of the head, taken in a straight 

 line, from the tip of the nose to the 

 nape — — — — 18 



Breadth of the snout at its extremity o 4 



Breadth of the aperture of the mouth, 

 taken from one corner of the jaw 

 to the other — — — o 3! 



Projection of the upper jaw beyond 



the under — — — — o 3* 

 Length of the upper teeth — — -02 

 Length of the under teeth — — o 3 

 Distance between the two nostrils — 01 



Distance 



