LIST OF CONTRIBUTORS. 127 



Meehan, Thomas. Continued. 



Exudation from flowers in relation to honey-dew. P '83, 190 



Irritability in the flowers of centaureas and thistles. P 



'83, 192 



■ Notes on the Sequoia gigantea. P '83, 193 



Longevity of trees. P '8:i, 200 



Notes on glaciers in Alaska. P '83, 249 



Favorable influence of climate on vegetation in Alaska. 



P '83, 255 



Botanical notes. Double flowers in Gelsemium nitidum. 



Euonymus japonicus. Development of fruit of Opuntia. 

 Helianthus tuberosus. Carya glabra. P '84, 14 



Indian use of Apocynum cannabinum as a textile fibre. 



P '84, 30 



The longevity of trees. P '84, 30 



Parasitism in Boschniakia glabra E. Meyer. P '84, 31 



Variation in Halesia. P '84, 32 



Catalogue of plants collected in July, 1883, during an ex- 

 cursion along the Pacific Coast in southeastern Alaska. P 

 '84, 76 



Botanical notes. Evolution of heat in plants. Relation of 



heat to the sexes of flowers. Specific differences in Picea nigra. 

 The flowers of Platanus. Variation in Symplocos fcetidus. 

 Sugar in Cladastris tinctoria. P '84, 116 



The nature of a fasciated branch. P '84, 140 



On rapid changes in the history of species. P '84. 142 



Opposite leaves in Salix nigra. P '84, 151 



On elasticity in the filaments of Helianthus. P '84, 200 



Sexual characteristics in Zinnia. P '84, 210 



On derivation in Pinus edulis and Pinus monophylla. P 



'84, 295 



Immediate influence of pollen on fruit. P '84, 297 



Spicate inflorescence in Cypripedium insigne. P '85, 30 



Persistence in variations suddenly introduced. P '85, 116 



Elasticity in the fruit of Cactaceae. P '85, 117 



Influence of temperature on the separate sexes of flowers. 



P '85, 117 



On the fruit of Opuntia. P '85, 365 



Note on Quercus prinoides. P '85, 365 



Inflorescence of the Compositae. P '85, 376 



Notes on Cactacege. Elastic fruit in Mamillaria. P '85, 378 



