— 266 - 



Bood ete. By Richard G. Shettle. — On the multiplication of 



Definite Integrai s. By W. H. L. Russell. 

 N. 158. Remarks on a New May of the Solar Spectrum. By 



J. Norman Lockyer. — On the Spectrum of Coggia's Comet. 



By William Huyyins. On acoustic Reversibility. By J. Tyn- 



d<M etc. 

 N. 159. Nature of the Sea-bottoni. By WiXUam B. Carpenter, 



— Report to the Hydrographer of the Admiralty on the 

 Cruise of H. M. S. Challenger from July to November 1874. 

 By Prof. Wyvitte Thompson etc. 



N. 160. On the Tides of the Arctic Seas. By the Rev. Samuel 

 Hangton. — On the determination, at Sea, of the Specific 

 Gravity of Sea- Water. By Buchanam. 



N. 161. On the Action of Heat on the absorption. — Spectral 

 and Chemical Constitution of Saline Solution. By Walter 

 Noel Hartley. — On attraction and Repulsion resulting from 

 Radiation. By William Grookes. 

 Proceedings of the Boston Society of Naturai History. 



Principal Contents of voi. XVI. Part III. Tributes to the Memory 

 of Louis Agassiz. — B. P. Mann. Anisopterix vernata and 

 pometaria. — T. Sterri), Unni. Stratification of rock-masses. 



— A. R. Grate. Notes ou the Noctuidae. — L. I. Pourtales. 

 Remark on Crinoids. — J. A. Alien. Metamorphism produced 

 by the burning of Lignite Beds. — T. M. Brewer, M. D. 

 Hybridism among the Ducks. — E. P. Austin. Catalogne of 

 Mt. Washington Coleoptera. — J. L. Le Conte. New Coleop- 

 tera. — J. A. Alien. Geographical Variation in North Ame- 

 rican Squirrels, with List of the N. A. Sciuridae. — H. 

 Hagen, M. D. On Amber in North America. — T. Sterri/ 

 Hunt. Deposition of Clays. — Robert Ridgivay. The Lower 

 Wabash Valley, and its Avian Fauna. 



Part IV. Robert Ridgway, The Wabash Valley and its Avian 

 Fauna. (Continued). — T. Sterry Hunt. On Dr. Grenth's 

 Researches on Corundum and its associated Minerals. — S. 

 Kneeland M. B. Remarks on the Ashantees and Fantees 

 Evidence for and against the existence of the socalled Sea- 

 serpent. - F. W. Putnam. Notes on the Ophidiidae and 

 Fierasieridae. — T. M. Brewer M. D. Notes on the Nesting 

 and Eggs of Lagopus leucurus. — H. Hagen, M. B. The 

 Odonate Fauna of Georgia. — F. W. Putmm. Remarks on 



