igo Dr. Haighton's experimental Inquiry 
First. The semen by its presence stimulates either the va- 
gina, os uteri, cavity of the uterus, <?r all of them. 
Secondly. The impression made on these is propagated to 
the ovaries by consent of parts. 
Thirdly. One or more of the ovarian vesicles enlarges, pro- 
jects, bursts, and discharges its contents. 
Fourthly. During this process in the ovary, the tube is un- 
dergoing a state of preparation for the purpose of embracing 
the ovary, and receiving the rudiments of the foetus. 
Fifthly. This preparation consists in part of an increased 
turgescence of its vessels, and a consequent enlargement of its 
fimbriated extremity. When thus prepared, it approaches the 
ovary. 
Sixthly. After the tube has performed its office by a peri- 
staltic motion, commencing at the fimbriae, and terminating in 
the uterus, it gradually returns to its former situation and. 
condition. 
Seventhly. While these different actions are going on in the 
appendages of the uterus, others not less important to the de- 
sign of nature are instituted in the uterus itself : for the tunica 
decidua, where it is obvious, is formed ready to secure firmness 
of connexion between the tender ovum and internal surface of 
the uterus, until a proper attachment by means of placenta 
can be effected. 
Eighthly. By way of guarding with additional security 
against a premature escape of the ovum, an apparatus, seated 
in the neck and mouth of the womb, now begins to develope 
its real structure, and perform its proper action, consisting in 
the secretion of a mucus-like substance, sufficient in quantity to 
fill completely the whole length of the neck, and by that 
