LIST OF CONTRIBUTOBS. 121 



Marx, Geo. A. contribution to the knowledge of the spider 

 fauna of the Bermuda Islands. P '89, 98 



On a new species of spider of the genus Dinopis from the 



southern United States. P '89, 341 



Mason, Francis. On some plants of Burmah. P '51, 201 

 Maury, M. F. On a vertical section of the basin of the Atlantic. 



P '53, 313 

 Mazyck, Wm. G. On the occurrence of Helix terrestris Chemnitz 



in North America. P '76, 127 



On a new species of Helix from Texas. P '77, 297 



Mazyck, Wm. G. and A. W. Vogdes. Description of a new fossil 



from the Cretaceous beds of Charleston, S. C. P '78, 272 

 Meehan, Thomas. On the uniformity of relative characters be- 

 tween allied species of European and American plants. P 

 '62. 10 



On Pinus pungens. P '66, 289 



On the period and ratio of annual increase in the circum- 

 ference of trees. P '66, 292 



On the consumption of force by plants in overcoming 



gravitation. P '66, 401 



On the structure of Lopezia, P '67, 33 



• Note on dioecious forms of Vitis vinifera. P '67, 42 



Additional notes on dioecious forms of Vitis vinifera. P 



'67, 98 



Sexual law in Acer dasycarpum Ehrb. P '68, 140 



Variations in Epiga?a repens. P '68, 153 



Monceeism in Luzula campestris. P '68, 156 



On the leaves of Coniferse. P '68, 181 



— — Mitchella repens L., a dioecious plant. P '68, 183 



Variations in Taxodium and Pinus. P '68, 300 



On seed vessels in Wisteria sinensis. P '68, 314 



On the seed vessels of Forsythia. P '68, 334 



— — On hybrid hickory nuts. P '69, 5 



Sexual law in the Coniferae. P '69, 121 



On the fibre of ramie. P '69, 136 



On the gland-beariug leaves on the peach and cherry. 



P '69, 136 



On the production of bractea in Larix. P '69, 176 



On adventitious and axillary buds. P '69, 178 



The law of development in the flowers of Ambrosia arte- 



mesiaefolia. P '69, 189 



