1889.] NATURAL SCIENCES OF PHILADELPHIA. 431 



during the year. The systematic cataloguing of the entire collec- 

 tion of birds is now fairly under way, and with such progress as has 

 been made, it is believed that the work will be completed be- 

 fore many years. The publication of special annotated lists, ac- 

 companying the identifications, is an important feature of Mr. 

 Stone's work. 



To my special assistant, Mr. J. E. Ives, I am indebted for a large 

 amount of labor in connection with the determination and classifica- 

 tion of new and old material in the possession of the Academy r prin- 

 cipally among the alcoholics. The refuse of accumulated material 

 is thus being gradually disposed of, and with the additional space 

 which is assured to the Academy, the full collection will shortly be 

 in a condition to be systematically placed. Dr. G. Baur, of New 

 Haven, has rendered valuable assistance through his critical studies 

 of the Academy's Testudinata, which were placed in his hands for 

 revision and cataloguing. This collection, which is rich in types and 

 rare species, numbers 429 specimens. These have all been redeter- 

 mined and labeled. 



The elaboration of the large collection of material brought from 

 the Bermuda Islands in the summer of 1888 by the Curator-in- 

 Charge and a class of students from the Academy has been com- 

 pleted, except as to one or two of the lower groups of organisms 

 (sponges). This material has furnished subject for several impor- 

 tant papers by different specialists, which have been published in 

 part in the Proceedings of the Academy and in part in an inde- 

 pendent publication on the physical history and zoology of the Ber- 

 mudas by the undersigned. The greater part of the material col- 

 lected proved new to the Academy's collections, while much of it 

 was new to science. The success of, and very light expense attend- 

 ing, the expedition show how much may be accomplished even with 

 little effort in zoogeographical research, and encourages the hope 

 that researches of a similar nature may hereafter be systematically 

 conducted under the auspices of the Academy. 



The losses to the Academy's collection during the year have been 

 insignificant, Less than a dozen specimens have been removed from 

 the museum as having passed beyond the period of their usefulness. 

 Specimens were loaned for study during the year to Prof. Alfred 

 Newton, of Cambridge, England ; to Prof. O. C. Marsh and Dr. G. 

 Baur, of New Haven ; to Dr. W. B. Clark, of Batimore ; to Dr. 



