1887.] NATURAL SCIENCES OF PHILADELPHIA. 427 



arrangement of the collections, and it is hoped in a very short time 

 a regular zoological sequence may be established. 



Very respectfully, 



Benjamin Sharp, 

 Professor of Invertebrate Zoology. 



KEPOKT OF THE PROFESSOR OF MINERALOGY. 



The Professor of Mineralogy respectfully reports that since his 

 last published report he has delivered in the Hall of the Academy 

 a course of twenty-five lectures on Mineralogy, to a class of some 

 thirty persons. Field excursions and lectures in the neighborhood 

 of the city were given, as well as practical instruction in the labora- 

 tory of the Academy. During the past two years no lectures were 

 given on account of absence in Europe, the undersigned being en- 

 gaged during the winters in petrological studies at the University of 

 Heidelberg, and during the summers at geological researches in 

 Great Britain and on the continent. It is intended to deliver a 

 course of illustrated lectures upon Microscopical Petrology during 

 the present winter. 



As shown by the accompanying report of the Curators, the min- 

 eralogical collection of the Academy has been enriched by a num- 

 ber of valuable additions. 



Respectfully submitted, 



H. Carvill Lewis, 



Professor of Mineralogy. 



REPORT OF THE PROFESSOR OF ETHNOLOGY AND 



ARCHEOLOGY. 



During the past year a private course of six lectures were deliv- 

 ered by me on Anthropology and several on Archseology in the pop- 

 ular course. They were well attended^ and there have been many 

 indications that these subjects and those of pre-historic man and 

 Ethnology, which are properly branches of it, are exciting more and 

 more attention, both in the American scientific world at large and 

 particularly in this community and among members of the Academy. 



