312 {Feb. 15, 
of U.S. Engineers ; Signal Service Office ; Librarian of Con- 
gress, and Dr. Geo. Engelmann, of St. Louis. 
Mr. Lesley communicated part of a letter from Mr. Leo. 
Lesquereux, of Columbus, Paleeobotanist of the Geological 
Survey of Pennsylvania, relating a discovery by Mr. Mans- 
field, in his coal mines near Darlington, Beaver Co. Pa. of 
the flowers and leaves attached to the stems of Cordaites. 
“Sternberg in 1835 first found a stem with leaves attached ; on which 
specimen, Corda in 1845 made his celebrated analysis of Mlabelaria 
borassifolia. One other specimen was found by Lesquereux, near Potts- 
ville, in 1858. Recently Grand’ Eury’s discoveries have enabled him to 
publish last fall his splendid monograph of the Cordaites in his Carbonifer- 
ous Flora. Mr. Mansfield has now obtained a splendid series of branches 
with leaves, and even with leaves and flowers, representing in well defined 
characters numerous species, and a new section of this family unknown 
toGrand’Eury ; so that we now have not only the types of the French au- 
thor, but other and some.new ones far more clearly illustrating the relation 
of this remarkable group.”’ 
Mr. Lesley proposed to read Mr. Lesquereux’s descriptions 
of his new forms (represented on nine plates, now being 
drawn on stone) at the next meeting. 
Mr. Lesley exhibited what appears to be an Orthoceras cast 
in a matrix of schist, lent for examination by Dr. Chas. H. 
Stubbs to Prof. Frazer, Assistant in charge of the Survey of 
Lancaster County, said to have been found at Frazer’s Point, 
on the Susquehanna one mile south of the Maryland State line. 
Dr Cresson exhibited specimens of large moths: 1. Samia 
Cecropia, native, feeding on oak leaves; 2. Samia cynthia, 
male and female, from China, feeding on Ailanthus leaves ; 
3. Actia luna, green moth, feeding on the cucumber tree— 
with their cocoons—prepared by Dr. Samuel Chamberlain, 
who proposes to introduce the general culture of these moths 
for the purpose of establishing a home manufacture of silk. 
The minutes of the last meeting of the Board of Officers 
were read. 
Pending nominations 852 and 853 were read. 
Mr. Fraley reported the receipt of the last interest on the 
Michaux Legacy, due Jan. 1, 1878. 
And the Society was adjourned. 
