CONTENTS OF VOL. XII. PARTS II and III 



4. — HoUick, Arthur. Some Features of the Drift on 



Staten Island, New York, (Plate I), . . . . 91-102 



5. — Weil, Richard. Development of the Ossicula 



Audita in the Opossum, (Plates II-III), . . 103-112 



6. — Merrill, Frederick J. H. Origin of the White 

 and Variegated Clays of the North Shore of 

 Long Island, 113-116 



7. — Clark, Hubert Lyman. Further Notes on the 



Echinoderms of Bermuda, (Plate IV), . . . 1 17-138 



8. — Whitfield, R. P. List of Fossils, Types and Fig- 

 ured Specimens, used in the Pal?eontological 

 Work of R. P. Whitfield, showing where they 

 are probably to be found at the present time, . 139-186 



9. — Irving, John Duer. A Contribution to the Ge- 

 ology of the Northern Black Hills, (Figs. 5-20; 

 Plates V-XVI), 187-340 



10. — Kretz, Walter C. The Positions and Proper 

 Motions of the Principal Stars in the Cluster 

 of Coma Berenices as Deduced from Measure- 

 ments of the Rutherfurd Photographs, . . 341-478 



11. — Catalogue of Exhibits, Seventh Annual Recep- 

 tion and Exhibition, New York Academy of 

 Sciences, April 25 and 26, 1900, .... 479-520 



12. — Rankin, W. M. The Crustacea of the Bermuda 



Islands, (Plate XVII), 521-548 



13. — Gray, Louis H. Contributions to Avestan Syn- 

 tax, The Conditional Sentence, 549-588 



14.— Ritter, Wm. E. Some Ascidians from Puget 



Sound Collections of 1 896 (Plates XVIII-XX), 589-6 1 6 



15. — Dodge, Richard E., Recording Secretary. Rec- 

 ords of Meetings of the New York Academy 

 of Sciences, January, 1899, to December, 1899, 617-690 



16. — Title Page and Index for Volume XII, . . . 691-715 



Index Slips for Librarians, Appendix 



Supplement to List of Members, Corrected to Decem- 

 ber 6, 1899 Appendix 



