191 
Additional Remarks on the Lycaon pictus. 
After the death of the dog, the bitch which was with him became 
restless, howled frequently, refused her food, and died July 13th, ten 
days after. 
I examined the body a few hours after death. She was about the 
same size as the dog, and of the same age. She had probably lost 
10 or 15 Ibs. in weight. The body weighed 31} lbs., and the sub- 
joined is the relative weight of the viscera, fractions being omitted :— 
Heart, 7 oz. =};. 
Lungs, 24 oz. 3. 
Liver, 18 oz. 3,. 
Spleen, 790 grs. =4,. 
Pancreas, 370 grs. <45- 
Kidney, 1080 grs. 51;. 
Alimentary canal, 13 feet 6 inches. 
The uterus resembled that of the bitch (C. familiaris) ; the vagina 
9 inches in length, the cornua 6 inches each. 
But one of the most interesting results of this dissection was the 
examination of the blood-corpuscles ; these were larger than in any 
carnivorous animal that I have dissected ; they measured, the greater 
part of those examined, about the 3000th of an inch in diameter, 
being larger than those of Man. 
I may add, that I could not discover any morbid lesion in this 
animal, and that I believe her death was occasioned by the loss of 
her companion. 
Dr. Crisp exhibited the injected heart and large arteries of a Viper 
(/. berus), for the purpose of showing the mode of communication 
between the aortee, by way of contrast with the Saurians and Che- 
lonians. The organs of generation (male) were likewise shown, the 
large comparative size of the testicles, and the great length of the 
seminal ducts being especially noticed. 
Dr. Crisp had formed a table of the length and weight of the body, 
as well as of the viscera of seven of these reptiles, which he had dis- 
sected. The length varied from 19 to 23 inches; the weight from 
1 oz. 182 grains to 3 ozs., the females being the largest. In the 
stomach of one of these reptiles a half-grown frog was found; in the 
remaining six this viscus was empty. 
The proportion the various viscera of this reptile bear to the body 
is about as follows:—Liver, 30; pancreas, 2140; spleen, 2146 ; 
kidney, 59; heart, 178; brain, 1620. 
Dr. Crisp stated that he had inserted the poison of the Viper into 
the bodies of Toads, Frogs, Snakes, Lizards, and several insects, 
without producing apparently any deleterious effects, but the experi- 
ments required repetition. Dr. Crisp believed that he had positive 
evidence to show that the young of the Viper were sometimes 
received into the throat of the mother; and the assertion of Pro- 
