GROWTH OF FETUS 



173 



At about the 13th day after insemination the fetus is large 

 enough to be directly weighed and from this date to birth the 

 growth has been followed. 



TABLE 118 



Showing the mean weights of the fetuses at ten ages during gestation and at birth 



Stotsenburg ('15) 



TABLE 119 



Giving the crown-rump length of fetus in millimeters. Scrap diet only, 

 uses here measured are part of those used for Table 118 



The fet- 



* This method of measurement gives a less length than the nose-anus method 

 commonly used for the new born. 



In a series of 38 females, each of which had already born one 

 litter, Stotsenburg ('15) has observed exactly the tune of 

 insemination and then weighed the fetuses at the ages given hi 



