The book of nature : containing information for young people who think of getting married : on the philosophy of procreation and sexual intercourse, showing how to prevent conception and to avoid child-bearing : also, rules for management during labor and child-birth . te that one of these globules, whichare not visible to the naked eye, but can be seen only witha microscope, contains thirty of them. After the globulesbreak open, the Zoospermes grow and become developedbefore they are in a fit state to enter the female to their head is a sort of sucker which fastensitself on to a
The book of nature : containing information for young people who think of getting married : on the philosophy of procreation and sexual intercourse, showing how to prevent conception and to avoid child-bearing : also, rules for management during labor and child-birth . te that one of these globules, whichare not visible to the naked eye, but can be seen only witha microscope, contains thirty of them. After the globulesbreak open, the Zoospermes grow and become developedbefore they are in a fit state to enter the female to their head is a sort of sucker which fastensitself on to anything it can take hold of. By the aid ofthe microscope we are enabled to study the habits of theseanimalculse so closely that it is known they cast their skinsas they grow larger, like some insects. A French physi-ologist writes that he easily distinguishes their sex, maleand female, but we doubt the truth of his assertion. Theyare apparently very playful and active, but it appears to betheir nature to move only in one direction, and that straightforward—which movement has a connection with impreg-nation that is explained elsewhere in these pages. Inwatching the motions of these curious little creatures, wefind that combats frequently occur among them. They. 4- \ ^151 -
Size: 1403px × 1781px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorhistoryofmedicinecollectionsdukeuniversityncd, bookce
