CONTRIBUTIONS FROM THE BOTANICAL LABORA- 

 TORY OF THE UNIVERSITY OF MICHIGAN, 



1898-1902. 



35. Comparative Structure of the Leaves of Datura Stramonium, 



Atropa Belladonna and Hyoscyamus Niger. Julius O. 

 Schlotterbeck and Abraham Van Zwaluwenburg. Phar- 

 maceutical Archives, I, 1898, i. 



36. A Study of Stramonium. Julius O. Schlotterbeck and Abra- 



hafn Van Zwaluwenburg. The Pharmacologist, I, 1898, 65. 



37. Histology of Clove Bark. Abraham Van Zwaluwenburg. 



The Pharmacologist, I, 1898, 97. 



38. The Developmental History of Important Seeds. Abraham 



Van Zwaluwenburg, Pharmaceutical Archives, II, 1898, n. 



39. Cellulose-Enzyme. Frederick C. Newcombe. (Vorl. Mitt- 



heilung) Bot. Centralblatt, LXXIII, 1898, 105. 



40. The White Pine (Pinus Strobus). Volney M. Spalding. 



U. S. Dept. Agri., Div. of Bot., Bull. No. 22, 1899, n. 



41. Cellulose Enzymes. Frederick C. Newcombe. Annals of 



Botany, XIII, 1899, 49. 



42. Pseudo-Pleurococcus, nov. gen. Julia W. Snow. Annals of 



Botany, XIII, 1899, 189. 



43. Ulvella Americana. Julia W. Snow. Bot. Gazette, XXVII, 



1899, 309- 



44. The Mechanism of Root Curvature. James B. Pollock. Bot. 



Gazette, XXIX, 1900, i. 



45. The Development and Function of the Cell- Plate in Higher 



Plants. Hamilton G. Timberlake. Bot. Gazette, XXX, 



1900, 73. 



46. Notes on the Mechanics of the Seed-Burying Awns of Stipa 



avenacea. Lewis Murbach. Bot. Gazette, XXX, 1900, 113. 



47. Progress in Forestry Under State Control. Volney M. Spald- 



ing. Science, 1900. 



48. A Contribution to the Natural History of Marl. Charles A. 



Davis. Journal of Geology, VIII, 1900. 



49. Progress of Forest Management in the Adirondacks. Volney 



M. Spalding. Science, 1901. 



50. Transition from Stem to Root in Echinocystis lobata Torr. 



and Gray. James B. Pollock. Third Report Mich. Acad. 

 Sci., 1901, 40. 



51. The Ecology of a Glacial Lake. Howard S. Reed. Third Re- 



port Mich. Acad. Sci., 1901, 43. 



