KEl'OUr OF ASSISTANT SECKKTARY. 35 



Ekwaul) S. Mousk. — On auciciit ;in<l luodoni metliotls of arrow release* 



'liiKODoiiic (in. I,. — Tim ordinal and .•sni)ur-(ti(linal j^ronps of Fishes. t 



II. A. KoWl.A.vo. — On the ab.ioIuU; and ndativc wave lengths of the lines of the 

 Solai' .Spcctiinn.t 



WoLCOTT Gli;i;.S. — Pl.itinoiis coni[)onnds as additive molecules. t 



lUA Kk.MSKX. — Inllucnce of Ma;;netisni on Cheniieal Action. t 



Alkxanoer Gu.viiA.M 13KLL. — Upou the Deaf and l>umb of Martha,"s Vineyard (cou- 

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



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



G. F. IJKCKEii.— Cretaceons Metauiorphie Kucksof California (hy invitation).! 



Ogdkx N. Rood — Ou color contrast. 



Ciiaklks D. Walcott. — Classilication of the C'anihiian System of North Aniericd 

 (by invitation). 



A. VV. Wkight. — Crystallization of Platinnni by means of the electric discharge 

 in vacuo. t 



W. K. IJiioOKS. — The Stoniatopoda of the '• Challenger " collection.! 



W. K. BuooKS. — Buddiug iu the Tuuicata. 



A. \V. WiUGilT. — Effect of Magnetization on the electrical resistance of Metals. 



K. E. Pkaiiy, U. S. Navy.— Ou a proposed expedition into the interior of (ireeu- 

 land during the present summer with Disco as a base (l>y invitation •. 



BIOLOGICAL tiOCIETY OF JIASHIXGTOX. 



The thvst of tlic fortnigLiLly inectiiigs held diuiiiy the year was the 

 eighly-seconcl leguhu meeting of the soeiety. 



(October :5I, 1885.) 



Marshall ^IcD(.).\ald. — Fish-culture a necessity for the, maintenance of the shad 

 fi.shery. 



William If. Dall. — Deep-sea Moll usks and the laws illustrated in thtnr tlevelop- 

 ment. 



KiciiAUi) Kathbun.— Remarks on the Wood's lIoU Station of the U. S. Fish Com- 

 mission. 



IvO.MYN Hitchcock. — Notes ou the Red Snow, with exhibition of specimens. 



(November 11, 1885.) 



Richard Rathijux. — Rcinarkg ou the "Wood's IloU Station of the U. S. Fish Com- 

 mission. 



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



JoHX A. Rydkr. — A ucwand practical system of raising oysters on a large scale. 



Frkdericic W. TuUK.— Ou a spotted dolphin apparently identical with the /'ro- 

 dclphinits doris of Gray. 



(November 28, 1685.) 



'I'iikobald S.MITH. — A simple device for storing cover-glass pri])arat ions illustra- 

 tive of bacterial disease. 



W. S. Barxard. — 1. Environmental digestion; 2. Specimen mount, tnbe-holderH, 

 labels and stoppers. 



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

 ornithology. 



Charles D. Walcott. — Evidence of the loss of vita! fore<- in eeitain Trilobifes ou 

 approacbiug extinction. 



Frederick W. True. — A new study of the Americ.in pocket-rats: y^tmu^ Dlpodomija. 



" Read April 21. t Read April 22. 



