160 INDEX 10 AMERICAN BOTANICAL LITERATURE 
Pammel, L. H., & Lummis, G. M. Germination of maize. Proc. 
Soc. Prom. Agric. Sci. 24: 92-96. 1903. 
Pammel, L. H., & Lummis, G. M. The germination of weed seeds. 
Proc. Soc. Prom. Agric. Sci. 24: 89-92. 1903. 
Parish, S. B. A contribution toward a knowledge of the genus 
Washingtonia. Bot. Gaz. 44: 408-434. f. 7-12. 18 D 1907. 
Patten, A. J. The proteid content of wheat as an index to its bread- 
making qualities. Rep. Michigan Acad. Sci. 8: 75-77. 1906. 
Penhallow, D. P. A blazing beach. Pop. Sci. Mo. 70: 557-564. 
Je 1907. [I llust. ] 
Penhallow, D. P. A contribution to our knowledge of the origin and 
development of certain marsh lands on the coast of New England. 
Trans. Roy. Soc. Canada III. 1*: 13-55. f. 7-8. 1907. 
Pennington, L. H. Plant distribution at Mud Lake. Rep. Michigan 
Acad. Sci. 8: 53-63. f. 1-4. 1906. 
Pittier, H. Ensayo sobre las plantas usuales de Costa Rica. i-xi + 
1-176. pl. 1-77. 1908. 
Pond, R. H. Solution tension and toxicity in lipolysis. Am. Jour. 
Phys. 19: 258-283. 1 Jl 1907. 
Robinson, C. B. Sugar-cane smut. (Ustlago Sacchari.) Philippine 
Agr. Rev. 1: 295-297. Jl 1908. 
Also in the Spanish edition of the Review 1: 312-315. Jl 1908. 
Saunders, W. Decrease in vitality of grain by age. Proc. Soc. Prom. 
Agric. Sci. 24: 60-64. 1903. 
Saunders, W. Some results of cross-fertilizing. Proc. Soc. Prom. 
Agric. Sci. 24: 56-59. 1903.  [Illust. ] 
Schaffner, J. H. Check list of Ohio shrubs. Ohio Nat. 8: 205-209. 
N 1907. 
Sellards, E. H. Notes on the spore-bearing organ Codonotheca and its 
relationship with the Cycadofilices. New Phytol. 6: 175-178. Jl 
1907. 
Shepperd, J. H. Some of the effects of excessive nutrition. Proc. Soc. 
Prom. Agric. Sci. 25: 98-101. 1904. 
Shimek, B. Notes on some Iowa plants. Proc. Davenport Acad. 
Sci. 10: 141-145. 1907. 
Smith, C. D. Some notes on nodules. Rep. Michigan Acad. Sci. 8: 
67-74. 1906.  [lllust.] 
Snyder, H. ‘The water soluble plant food of soils. Proc. Soc. Prom. 
Agric. Sci. 25: 25-31. 1904. 
