130 PROF. M. WATSON ON THE FEMALE ORGANS OF THE PROBOSCIDEA. 



case having beeu recorded by Corse, the animal above referred to (of the impregnation of which Corse himself 

 was an eye-witness) having subsequently given birth to a calf. Thus we have authentic information of the 

 birth of three young Elephants, the parents of which bred in a state of captivity : — (1) that reported by Corse, 

 which took place on the 16th March 1795 ; (2) that reported by Professor Owen, which took place on the 3rd 

 August 1865 ; and (3) that reported by Chapman, which took place on the 9th March 1880. In the first of 

 these instances the period of gestation, dating from the first copulation, was 595, and from the last 594 days. 

 In the second the duration of pregnancy was 593 days ; whilst in the third the period of gestation, dating from 

 the first copulation, extended to 655, and from the last to 629 days. In the latter case, therefore, the period 

 of gestation exceeded that of the first two by a little over one month. 



DESCRIPTION OF THE PLATES. 



PLATE XXL 



Eemale Organs of Indian Elephant {Elephas indicus). Half nat. size. 



O, Ovary; S, Septum, separating the peritoneal pouch into two compartments — an 

 upper or ovarial, and a lower or tubal ; M.D, Bristle passed into the morsus 

 diaboli ; C. U, C. U, Cornua uteri ; U, Corpus uteri ; V, Vagina ; B, Bladder ; 

 E., Eectum ; Ua, Urethra ; U.G, U.G, Urino-genital canal ; I, Ischial bone '• 

 S. A., Sphincter ani externus ; Ur, Ureter ; I.C, Ischio-cavernosus muscle ; 

 C.V, Constrictor vaginse (Bulbo-cavernosus) muscle; L.C, Levator clitoridis 

 muscle ; CI, Clitoris ; P, Preputium clitoridis. 



PLATE XXII. 



Female Organs of Indian Elephant {EIe])has indicus). 



Fig. 1 . Uterus, vagina, and commencement of urino-genital canal, opened, from above : 

 half nat. size. C. U, C.U, Cornua uteri (a bristle is inserted into the right 

 cornu) ; U, U, Cavities of uterus, separated by the septum uteri ; O. U, O. U, 

 Ora uteri ; V, V, Double canal of vagina, with septum vaginse between them ; 

 O.V, O. V, Bristles passed through the ora vaginae ; U.C, Urinogenital canal. 



Fig. 2. Ovary and peritoneal pouch of right side : nat. size (the ovary is thrown up to 

 show the Fallopian tube). O, Ovary ; C. U, Cornu uteri ; F. T, Fallopian 

 tube (the asterisk indicates the point where the calibre of the tube suddenly 

 diminishes) ; S, Septum, which sejiarates the peritoneal pouch into O. P, the 

 ovarial pouch, and T.P, the tubal pouch; M.D, Morsus diaboli, opening 

 into the tubal pouch. 



Fig. 3. Commencement of urino-genital canal : nat. size. U, Orifice of urethra ; G. C, 

 G. C, Openings of canals of Gaertner : O.V, O.V, Ora vaginae. 



Fig. 4. Extrapelvic portion of urino-genital canal, nat. size, laid open from above to 

 show the orifices of the Cowperian (Bartholinian) ducts. C. D, C. D, Bristles 

 passed into the ducts of Cowper's glands ; C, C, Crura clitoridis, separated 

 from the body of the clitoris. 



