713 
in iron and steel was observed by him several years ago, but he believed 
that it was not generally credited. It was a source of error in determining 
carbon by the colorimetric method. He proposed to make further investi- 
gation by analyses, and to communicate his results. 
The Committee on the Michaux Legacy reported that they 
had purchased and presented to the Fairmount Park Com- 
mission, for Horticultural Library, the North American 
Sylva, by Michaux and Nuttall. 
Prof. Cope moved the appointment of a committee to ex- 
amine and report on the merits of his paper, reported on ad- 
versely to its publication at a previous meeting. After dis- 
cussion of the motion by Messrs. Cope, Frazer, Briggs and 
LeConte, the consideration of the subject further was, on 
motion of Dr. LeConte, postponed to the next meeting. 
Pending nominations Nos. 852 to 856 were read and the 
meeting was adjourned. 
Stated Meeting, April 19th, 1878. 
Present, 15 members. 
Vice-President, Mr. E. K. Price, in the chair. 
A letter acknowledging the receipt of Nos. 96, 97, 98, was 
received from the Royal Academy at Amsterdam, dated 
Oct. 20, 1877. 
Letters of envoy were received from the same, Nov. 13, 
1877; the Royal Zoological Society, Amsterdam, Feb. 1, 
1878; the Society at Marburg, Jan. 1; and the Royal Ob- 
servatory at Bruxelles, Oct. 1, 1877. 
A letter was received from the Fairmount Park Commis- 
sioners acknowledging the gift of the Michaux and Nuttall 
Flora Americana, for the Park Library, dated April 15,1878. 
Donations for the Library were received from the Acade- 
mies at St. Petersburg, Berlin, Amsterdam, Bruxelles, Rome 
and Philadelphia; the Zoological Society at Amsterdam ; 
the German Geological and Horticultural Societies in Berlin ; 
PROC. AMER. PHILOS. SOC. XvIT. 101. 4K. PRINTED JULY 1, 1878. 
