ORIGIN OF THE COLLECTION. 



17 



TABLE 3. Sources of embryological material by states, cities, and countries. 



specimens from widely different countries. This wide distribution is due to the 

 systematic circularization of the medical profession. We began by publishing 

 letters of appeal in scientific journals, such as the American Naturalist; but as 

 this was rarely seen by physicians it proved a waste of effort. Then, at the sug- 

 gestion of Professor Minot, a number of articles were published in Wood's Reference 

 Handbook in the belief that these would come under the eyes of physicians whom 

 we hoped to reach; this plan likewise proved of little value. Finally, a circular 

 was drawn up, widely distributed, and reprinted in most of the medical journals of 



