154 



MILK AND ITS HYGIENIC RELATIONS 



proportion between the rate of growth and the amount of milk 

 taken. 



The Response to an Increased Stimulus. Several investigators 

 have shown that the amount of milk given by the gland can be 

 increased by increasing the demand upon it. Budin showed that if 

 a wet-nurse was called upon to feed more than one child, her milk 

 increased in amount ; and, up to a certain limit, varied with the 

 number of children she was feeding. Similar results were shown 

 by Schlossmann, and more recently by Brodsky and also by 

 Aurnhammer. In order to demonstrate this the following diagram 



N Ofchitdren fa tmvdw own chl/d 



soo 



Weeks after d\l2\li 

 parturition 



Shows amount taken by wet-nurse's own child. 

 BHB Shows amount taken by the other children. 



DIAGRAM 5. Showing the relationship between the amount of milk given 

 and the number of children fed. 



has been prepared from one set of Budin 's figures. Other figures 

 by Budin and also by Schlossmann are given in Appendix A. 



Diagram 5 shows the very remarkable response made by the 

 gland to an additional stimulus. The marked temporary drop in 

 the quantity of milk given which occurred on two occasions when 

 the number of children fed was reduced is extremely interesting. 

 Birk also deals with the increased response of the gland to the 

 demand put upon it, and points out that care should be taken to 

 avoid overtaxing the strength of the mother. 



Some interesting points in connection with the intervals of 

 feeding were also ascertained by Helbich. This observer obtained 



