246 MR, R. OWEN ON THE ANATOMY 
the present time, December 1838, the two middle permanent incisors are far advanced 
beyond the rest, and the two adjoining ones are risen into place. 
The following table shows the rate of growth of the Giraffe, and the relative sizes of 
a male and female of the same age, which in May, 1836, was about one year and a 
half. 
Guib-allah (male). 
Height as far as reach. Wither. Rump. 
Feet. Inches. | Feet. Inches. Feet, Inches. 
May A886 ris /etrne tor bowie 0 0 0 0 
May, 1837... 13 6 7 9 6 9 
May, 1838 . ... 14 3 8 6 7 6 
Zaida (female). 
May, 1836... 11 0 0 0 PTO G 
May, 1837... . 12 9 7 2 6 5 
May, 1838 . . . i3 5 ED 7 2 
Notwithstanding, however, the evidences of immaturity afforded by stature and den- 
tition, copulation took place seven times in the course of March, 1838, the first occa- 
sion being on the 18th of that month; the manner and peculiar rapidity of the act were 
precisely as in the Deer. At the present time, December, 1838, there is evidence of 
the pregnancy of the female in the expansion of the abdomen, the swelling of the 
superficial abdominal veins, and the enlargement of the external parts of generation : 
and IJ have been able to discern the motions of the fetus through the abdominal parietes. 
This female is in excellent health ; and it may be confidently expected that the period 
of gestation and the condition of the new-born animal,—facts which are of essential 
importance in the natural history of every species,—may soon be recorded in the Pro- 
ceedings of the Zoological Society, in addition to those particulars with which the 
spirited and successful endeavours to import the Giraffe into this country have already 
afforded the means of enriching its scientific history. 
