1890.] NATURAL SCIENCES OF PHILADELPHIA. 487 



A number of specimens Ijsive been purchased by the Section, and 

 added to the collection of the Academy. 



Respectfully submitted, 



Theo. D. Rand, 



Director. 



REPORT OF THE PROFESSOR OF INVERTEBRATE 

 PALEONTOLOGY. 



The Professor of Livertebrate Paleontology respectfully reports 

 that owing to protracted absence in Mexico and Yucatan, acting as 

 director of the scientific expedition organized under the auspices of 

 the Academy, he was unable to participate in the regular spring 

 course of instruction. He hopes, however, to make good the de- 

 ficiency by extending the course of lectures contemplated for the 

 coming season. 



The collections of the Academy in the department of Paleontol- 

 ogy continue to receive steady accessions of material, so that it is 

 able to maintain itself as one of the leading departments of the in- 

 stitution. Aniong the more important accessions of the year is a 

 large collection of Eocene fossils from the State of Texas, kindly 

 presented by the State Geologist, Mr. E. T. Dumble. The collections 

 obtained in Mexico and Yucatan by the Academy's expedition, 

 which still largely await critical examination, ai'e a contribution 

 alike new to science and to the Academy's museum. 

 Respectfully submitted, 



Angelo Heilprin. 



REPORT OF THE PROFESSOR OF ETHNOLOGY AND 

 ARCHAEOLOGY. 



In the early months of 1890 I delivered a series of ten lectures 

 on the " General Science of Ethnography," including its main prin- 

 ciples and their application to the study of man throughout the 

 world. 



These lectures were well attended, from 150 to 175 being the aver- 

 age number of persons present. They appeared to excite an interest 

 in the subject, and at the request of several of the auditors the lec- 

 tures have since been written out and published under the title, 

 " Races and Peoples ; Lectures on the Science of Ethnography." 

 It is believed that the attention thus directed to this important 



