182 THE PHYSIOLOGY OF REPRODUCTION 



original experiment, as quoted from a contemporary English 

 translation : 



" I chose a bitch spaniel of moderate size which had before 

 had whelps. Suspecting, from certain appearances, that she 

 would soon be in heat, I confined her in an apartment, where 

 she continued a long time, as will be seen below. For greater 

 security, that she might never be let loose, I fed her myself, and 

 kept the key the whole time. On the thirteenth day she began 

 to show evident signs of being in heat ; the external parts of 

 generation were tumid, and a thin stream of blood flowed from 

 them. On the twenty-third day she seemed fit for the admission 

 of the male, and I attempted to fecundate her artificially in 

 the following manner. A young dog of the same breed furnished 

 me, by a spontaneous emission, with nineteen grains of seed, 

 which were immediately injected into the matrix, by means of 

 a small syringe introduced into the vagina. As the natural 

 heat of the seed of animals of warm blood may be a condition 

 necessary to render fecundation efficacious, I had taken care 

 to give the syringe the degree of heat which man and dogs are 

 found to possess, which is about 30 [or between 99 and 100 

 Fahrenheit]. Two days after the injection, the bitch went off 

 her heat, and in twenty days her belly appeared swollen, which 

 induced me to set her at liberty on the twenty-sixth. Mean- 

 while the swelling of the belly increased ; and sixty-two days 

 after the injection of the seed, the bitch brought forth three 

 lively whelps, two male and one female, resembling in colour 

 and shape not the bitch only, but the dog also from which the 

 seed had been taken. Thus did I succeed in fecundating this 

 quadruped ; and I can truly say, that I never received greater 

 pleasure upon any occasion, since I first cultivated experi- 

 mental philosophy." 



Spallanzani also records a similar experiment by Pierre 

 Rossi, in which a dog was impregnated by artificial means. 



Considerable success has been obtained in recent years in ex- 

 periments on the artificial insemination of dogs. Gautier 1 refers to 

 a case in which pregnancy was induced by this means. Albrecht 2 



1 Gautier, loc. cit. 



2 Albrecht, "Kiinstliche Befruchtung," Wocfienschr. f. Thierheilkuiide und 

 Viehzucht, Jahrg. xxxir. 



