1886.] NATURAL SCIENCES OP PHILADELPHIA. 373 



namely, lack of funds, I have been able to have but 168 volumes 

 bound since the last report. These have been for the most part 

 Williamson books, the work being paid for from the I. V. Wil- 

 liamson fund. Nearly all our exchanges and accumulated pam- 

 phlets remain unbound, thereby not only exposing the Library to 

 loss, but causing serious inconvenience to readers and students. 

 A liberal appropriation for binding, therefore, is one of our 

 immediate and pressing needs. It will be seen by the accompany- 

 ing list of journals and periodicals received, that our exchanges 

 have been kept up and increased. The applications made for 

 deficiencies last year have been productive of their full result, 

 and the gaps still existing will probably have to be supplied by 

 purchase. 



The shelf list begun last year has been carried forward as 

 rapidly as my other duties would permit. Four or five sections 

 of the Library j^et remain to be included, but even in its incom- 

 plete condition the catalogue has proved useful in locating 

 accessions, detecting displacements and facilitating reference to 

 the shelves. 



AH of which is respectfully submitted. 



Edw. J. Nolan, 

 Librarian. 



REPORT OF THE CURATORS. 



The Curators present the following statement of the Curator- 

 in-Charge, as their report for the year 1886 : 



The Curator-in-Charge respectfully reports that during the 

 past year the work of arranging, classifying and preserving 

 the collections of the Academy has made considerable progress, 

 for which, as heretofore, the institution is largely indebted to 

 volunteer labor. The special thanks of the Academy are due to 

 Mr. George W. Tryon, Jr., Conservator of the Conchological 

 Collections, to Mr. John H. Redfield, Curator of the Herbarium, 

 and to Mr. Jacob Binder, Curator of the Collection of Minerals 

 covered by the Wm. S. Yaux Trust, for their disinterested labors 

 in their several departments. To the Entomological Section, 

 likewise, acknowledgment is due for work done in connection 

 with the caring of the collection of insects. 



In the departments other than those here indicated, the work has 



