1892.] 



Presents. 



463 



In conclusion, I must express my obligations to Mr. Gordon, who 

 has assisted me throughout. The work has been unusually tedious, 

 partly from its inherent nature, requiring as it does a certainty of 

 O'l milligram in the weighings, and still more from the constant 

 liability to accidents, which may render nugatory a large amount of 

 preparatory work. 



Presents, February 18, 1892. 

 Transactions. 



Basel : Naturforschende Gesellschaft. 



Heft 2. 8vo. Basel 1891. 

 Cambridge : Philosophical Society. 



Part 2. 4to. Cambridge 1891. 

 Cambridge, Mass. : Harvard College. 

 Zoology. Bulletin. Vol. XXII. 

 1892. 



Verhandlnngen. Bd. IX. 

 The Society. 



Transactions. Vol. XV. 

 The Society. 



Mnseum of Comparative 

 No. 3. 8vo. Cambridge 

 The Museum. 



Harvard University. Bulletin. Vol. VI. No. 7. 8vo. Cam- 

 bridge 1892. The University. 



Cherbourg : Societe Nationale des Sciences Naturelles et Mathe- 

 matiques. Memoires. Tome XXVII. 8vo. Cherbourg 1891 . 



The Society. 



Dijon : Academie des Sciences, Arts et Belles-Lettres. Memoires. 

 Ser. 4. Tome II. 8vo. Dijon 1891. The Academy. 



Eastbourne: Natural History Society. Transactions. Vol. II. 

 Part 5. 8vo. Eastbourne [1892]. The Society. 



Edinburgh : Royal Society. Transactions. Vol. XXXVI. Part 

 2. 4to. Edinburgh 1891. The Society. 



Glasgow: Philosophical Society. Proceedings. Vol. XXII. 8vo. 

 Glasgow 1891. The Society. 



