40 LIST OF CONTRIBUTORS. 



Dixon, Samuel G. Continued. 



Involution form of the tubercle bacillus and the effect of 



subcutaneous injections of organic substances on inflammations. 

 P '93, 100 



Dolley, Chas. S. On the process of digestion in Salpa. P '84, 113 



On the helictites of Luray Cave. P '86, 351 



On the histology of Salpa. P '87, 298 



Tracks on sandy beach of Lake Ontario. P '88, 336 



The botany of the Bahamas. P '89, 130 



The planktonokrit, a centrifugal apparatus for the volu- 

 metric estimation of the food-supply of oysters and other aquatic 

 animals. P '96, 276 



Dougherty, Wm. H. On marbleized iron. P '77, 194 

 Dreisler, Fletcher B. See Bicknell, E. P., and F. B. Dreisler 

 Du Chaillu, P. B. Notes from Africa. P '57, 194 



Notes on travels in Africa. P '59, 1 



Dudley, William. Description of a species of crane found in 



Wisconsin, presumed to be new. P '54, 64 

 Durand, Elias. On cones of Pinus pungens. P '59, 1 



On plants from Texas. P '61, 98 



On the so-called "American tea-plant.'' P '63, 275 



■ Plantas Prattenianas Calif ornicas : An enumeration of Cali- 

 fornia plants, made in the vicinity of Nevada, by Henry Pratten, 

 Esq., of New Harmony, with critical notices and descriptions of 

 such of them as are new, or yet unpublished in America. J III, 79 

 Plantas Kaneana? Grosnlandicas. Enumeration of plants col- 



lected by Dr. E. K. Kane, U. S. N., in his first and second Ex- 

 peditions to the Polar Regions, with descriptions and remarks. 

 J III, 179 



Durand, E., Thos. P. James and Samuel Ashmead. Enumera- 

 tion of the arctic plants collected by Dr. I. I. Hayes in his 

 exploration of Smith's Sound between parallels 78th and 82d, 

 during the months of July, August and beginning of September, 

 1861. P '63, 93 



Durand, E. and Theo. C. Hilgard. Plantae Heermanniame. 

 Descriptions of new plants collected in South California by Dr. 

 A. L. Heermann, Naturalist, attached to the Survey of the 

 Pacific Railroad Route, under Lieut, R, S. Williamson, U. S. N. 

 With remarks on other plants heretofore described, and belong- 

 ing to the same collection. J III, 37 



Dutton, Lieut. On Silurian and Devonian Brachiopoda. P '71, 112 



