266 



GENERAL INDEX. 



thes, 144 ; Crystallization in Plants, 

 151 ; Report on Wheat and Chess, 

 163. 



Index to Genera, 261. 



Le Conte, J. L., On the age of the 

 Lignite Beds of the Missouri River, 

 11. 



Leeds, Prof., On a Fulgurite, 145 ; On 

 elevation of temperature in a Lead 

 Mine, 145. 



Leidy, Jos., Remarks on Hydra, 10; 

 Remarks on Protozoa, 13 ; On the ! 

 mode of growth of Desmids, 15 ; ' 

 On Actinophrys sol, 23 ; Criticism 

 of paper of Mr. Cope, 74 ; Note on 

 the Enemies of Difflugia, 75 ; Re- 

 marks on a supposed comjiound 

 derived from Leather, 75 ; Notice 

 of some new Fresh-water Rhizo- 

 pods, 77 ; Notice of some fresh- 

 water and terrestrial Rhizopods, 

 86 ; Remarks on Revivification of 

 Rotifer vulgaris, 88 ; On Pectina- 1 

 tella magnihca, 139 ; On a parasitic 

 worm of' the House-fl}^ 139 ; Notice 

 of some fresh-water Infusoria, 140 ; 

 Notice of a remarkable Ameeba, \ 

 142 ; On the mode in which Amoeba [ 

 swallows its food, 143 ; On the ' 

 motive power of Diatomes, 143 ; 

 Remarks on Sponges, 144 ; Notice \ 

 of some Rliizopods, 155 ; Note on : 

 Dryocampa, 160 ; Notice of Re- 

 mains of Titanotherium, 165; No- 

 tices of Rhizopods, 166 ; On sup- 

 posed Spermaries in Amoeba, 168 ; 

 On Specific Gravity, 218 ; Remarks 

 on Fossils presented, 223 ; Notices 

 of Rhizopods, 225. 



Lewis, J., Description of a new spe- 

 cies of Helix. 116, 118 ; On a new 

 variety of Helix, 142, 162. 



E. 



Resignation as 



Macomber, N. 

 member, 116. 



Meehan, Thos., Dimorphous Flowers 

 in Passiflora, 9 ; Elevation of the 

 trunks of trees, 22 ; The veins of 

 Beech and Horubean Leaves, 80 ; 

 Direct Growth Force, 80 ; Habits 

 of the Orchard Oriole, 84 ; Poison- 



ous character of the flowers of Wis- 

 taria Sinensis, 84 ; Growth of the 

 Cuicusarvensis, HofF., 84 ; Change 

 of habit in Smilacina bifolia, 115 ; 

 Dimorphism in the leaves of Acer 

 Pennsylvanicum, 138 ; Change of 

 Habit through Fungoid Agency, 

 146 ; Wheat and Chess, 153 ; Vari- 

 ations in Solanum Fendleri, A. G., 



158 ; Abies concolor in Colorado, 



159 ; Fertilization of Gentiana, 160 ; 

 Variations in leaves of Ailanthus 

 glaudulosa, 160 ; Antlers of Am- 

 brosia artemisiiefolia, 215 ; Dimor- 

 phism in Apples, 215 ; Coloring of 

 autumn leaves, 218 ; Continuous 

 growth in Fungoidal Excrescences, 

 221. 



Nolan. E. J., Remarks on death of 

 Dr. Slack, 140. 



Officers for 1875, 235. 



Procter, Wm., Announcement of 

 death of, 15. 



Redfield, J. H., New growth of 



Plants, 154 ; On Asplenium ebe- 



uoides, 155. 

 Reed, A. G., Blindness of Salmon, 



216. 

 Report of Librarian,. 228. 

 Report of the Curators, 230. 

 Report of Recorder of Biological and 



Microscopical Section, 233. 

 Report of Conservator of Conchologi- 



cal Section, 234. 



Slack, J. II., Announcement of death 



of, 140. 

 Sparks, T., Announcement of death 



of, 159. 



Willcox, J., Mountain Drainage of 

 Tennessee and North Carolina, 

 Ancient Burial Customs, 164. 



Wyman, Dr. J., Announcement of 

 death of, 143. 



Yates, L. G., On Mammalian Fossils 

 in California, 18. 



