GENERAL INDEX. 



Austin, C. F., Characters of some new 

 Hepaticai (mostly North American), 

 together with notes on a few imper- 

 fectly described species, 218. 



Bancker, Chas. N., Announcement of 

 death of, 3. 



Cassin, John, Resolutions with refer- 

 ence to the death of, 1. 



Committees, Standing, for 1869, 2. 



Cope, E. D., Remarks on fossils from 

 the Southern States, 3 ; Third con- 

 tribution to the Fauna of the Mio- 

 cene Period of the United States, 4, 

 6 ; On the Cetaceans of the Western 

 Coast of North America, 5, 13; Re- 

 marks on Heloderma horridum, 5 ; 

 A review of the species of Pletho- 

 dontidae and Desmognathidte, 91, 

 93 ; Remarks on fossils from An- 

 guilla, W. I., 92 ; Remarks on Tho- 

 racosaurus, Ornithotarsus, and Ma- 

 crosaurus, 123; Ou the cranium of 

 Hyperaodon biden, and on Meso- 

 plodou, Eschrichtius, Hadrosaurus, 

 and Polydectes, 192. 



Correspondence, 245. 



Coues, E., On the variations of the 

 Genus Aegiothus, 179, 180; On the 

 classification of water birds, 191, 

 193. 



Davis, J. B , An attempt to ascertain 

 the average weight of the brain in 

 different races of mankind, 93. 



Donations to Library, 250. 



Elections for 1869, 244. 

 Ennis, J., The auroral display of April 

 15, 1869, 173. 



Index to Genera, 264. 



Lea, Isaac, Note on microscopic crys- 

 tals contained in minerals 3, 4 ; 

 Further notes on microscopic crys- 

 tals, 92, 119; Description of six 

 new species of fresh water shells, 

 124. 



Leidy, Jos., Notice of some extinct 

 vertebrata from Wyoming and Da- 

 kota, 12, 63. 



Meehan, Thos., Sexual law in the Co- 

 nifera, 92, 121 ; On the production 



of Bracteffi in Larix, 123, 176 ; On 

 the gland-bearing leaves on the 

 peach and cherry, 136; On the fibre 

 of Ramie, 136 ; Remarks on adven- 

 titious and axillary buds, 178 ; On 

 the law of development in the flow- 

 ers of Ambrosia anemisisefolia, 180, 

 189. 



Meek, F. B. and A. H. Worthen, De- 

 scription of new Crinoidea and 

 Echinoidea from the carboniferous 

 rocks of the Western States, with a 

 note on the Genus Onychaster, 12, 

 67 ; Remarks on the Blastoidea, 

 with descriptions of new species, 

 12, 83; Description of new carbo- 

 niferous fossils from the Western 

 States, 123, 137. 



Meigs, Dr. Chas. D., Announcement 

 of death of, 124. 



Officers for 1870, 243. 



Redfield, J. H., Note on Schizrea pu- 

 silla, 13 ; Note on Corema Conradii, 

 91 ; On Aspidium aculeatum, 179. 



Report of Curators, 234. 



Report of Ornithological Committee. 

 237. 



Report of Librarian, 238. 



Report of Recording Secretary, 239. 



Reports of Conchological Section, 240. 



Resolution regarding the Humboldt 

 festival, 172. 



Ridgway, Robert, Notice of certain 

 obscurely known species of Ameri- 

 can birds, based on specimens in 

 the Museum of the Smithsonian In- 

 stitution, 124, 125. 



Ruschenberger, Dr. W. S. W., Election 

 as President, 2. 



Scammon, C. M., On the Cetaceans of 

 the Western Coast of North Ameri- 

 ca, 5, 13. 



Tryon, Geo. W., Jr., Election as Cu- 

 rator, 3. 



Walsh, B. D., Announcement of death 

 of, 191. 



Wood, Alph., On Brevoortia, 172, 173. 



Warner, John, Remarks upon the 

 mathematic represeutatioa of or- 

 ganic forms, 124. 



