REPORT OF ASSISTANT SECRETARY. 35 



Edward S. Morse. — On ancient and modern methods of arrow release.* 



THEODORE Gill. — The ordinal, and super-ordinal groups of Fishes. t 



If. A. Rowland. — On the absolute and relative wave lengths of the lines of the 

 Solar Spectrum. t 



WOLCOTT Gibbs.— Platinous compounds as additive molecules.t 



Ira Remsen. — Influence of Magnetism on Chemical Action. t 



Alexander Graham Bell. — Upon the Deaf and Dumb of Martha's Vineyard (con- 

 tinuation of research relating to the ancestry of the Deaf). 



S. P. Langley. — On the Invisible Spectra.* 



G. F. Becker. — Cretaceous Metamorphic Rocks of California (by invitation). t 



Ogden N. Rood. — On color contrast. 



Charles D. Walcott. — Classification of the Cambrian System of North America 

 (by invitation). 



A. W. Wright. — Crystallization of Platinum by means of the electric discharge 

 in vacuo.t 



W. K. Brooks. — The Stomatopoda of the " Challenger" collection, t 



W. K. Brooks. — Budding in the Tunicata. 



A. W. Wright. — Effect of Magnetization on the electrical resistance of Metals. 



R. E. Peary, U. S. Navy. — On a proposed expedition into the interior of Green- 

 land during the present summer with Disco as a base (by invitation). 



BIOLOGICAL SOCIETY OF WASHINGTON. 



The first of the fortnightly meetings held during the year was the 

 eighty-second regular meeting of the society. 



(October 31, 1885.) 



Marshall McDonald. — Fish-culture a necessity for the maintenance of the shad 

 fishery. 



William H. Dall. — Deep-sea Mollusks and the laws illustrated in their develop- 

 ment. 



Richard Rathbun. — Remarks on the Wood's Holl Station of the U. S. Fish Com- 

 mission. 



Romyn Hitchcock. — Notes on the Red Snow, with exhibition of specimens. 



(November 14, 1885.) 



Richard Rathbun. — Remarks on the Wood's Holl Station of the U. S. Fish Com- 

 mission. 



W. S. Barnard. — Specimen mounting case and method. 



John A. Ryder. — A new and practical system of raising oysters on a large scale. 



Frederick W. True. — On a spotted dolphin apparently identical with the Pro- 

 dclphinus doris of Gray. 



(November 28, 1885.) 



Theobald Smith. — A simple device for storing cover-glass preparations illustra- 

 tive of bacterial disease. 



W. S. Barnard. — 1. Environmental digestion ; 2. Specimen mount, tube-holders, 

 labels and stoppers. 



C. Hart Merriam. — The work of the U. S. Department of Agriculture in economic 

 ornithology. 



Charles D. Walcott. — Evidence of the loss of vital force in certain Trilobites on 

 approaching extinction. 



Frederick W. True. — A new study of the American pocket-rats : genus Dipodomys. 



* Read April 21. t Read April 22. 



