1903.] natural sciences of philadelphia. 339 



May 5. 



The President, Samuel G. Dixon, M.D., in the Chair. 

 Thirty-nine persons present. 



A revision of the By-Laws was adopted providing that hereafter 

 (Chap. XII, Article 1) "the stated meetings of the Academy shall be 

 held on the first and third Tuesdays of each month from October to 

 May inclusive, at such hour as may be fixed by the Council ; but no 

 change shall be made in the hour except after one month's notice." 



Also that (Chap. VII, Art. 4) "the Committee [on Pubhcation] shall 

 examine all papers intended for publication and shall print those ap- 

 proved by it as far as practicable in the order in which they were pre- 

 •sented. It shall also prepare and print in the Proceedings abstracts 

 from the minutes of the meetings of the Academy and summaries of 

 verbal communications made to the Academy or any of its Sections." 



The following were ordered by the Publication Committee to be 

 printed : 



