218 INDEX TO AMERICAN BOTANICAL LITERATURE 
Metcalf, W. Notes on the Bishop pine (Pinus muricata). Jour. 
For. 19: 886-902. D 1921.  [Illust.] 
Miller, H. G. Further studies on relation of sulphates to ee 
growth and composition. Jour. Agr. Research 22: 101-110. 
8 O 1921. 
Moffatt, W. S. Why Illinois prairie flowers have disappeared. 
Nat. Stud. Rev. 17: 307-309. N 1921. 
Molfino, J. F. Contribucién a la flora de la regién de Bahia 
Blanca (Argentina). Physis 5: 1-27. 31 O 1ga2t._ [Illust.] 
Mulford, F. L. Trees with bright autumn foliage. Am. For. 
27: 648-655. O 1921. [Illust.] - 
Munns, E.N. Coulter pine. Jour. For. 19: 903-906. D 1921. 
Munns, E. N. Effect of location of seed upon germination. 
Bot. Gaz. 72: 256-260. 15 O 1921. 
Orton, C. R., & Weiss, F. The reaction of first generation 
hybrid potatoes to the wart disease. Phytopathology 
LEy 200-310... g LF. tot. 
Osborne, T. B., Wakeman, A. J., & Leavenworth, C. S. The 
proteins of the alfalfa plant. Jour. Biol. Chem. 49: 63-91. 
N 192!. 
Pascher, A. Uber die Ubereinstimmungen zwischen den Diato- 
meen, Heterokonten und Chrysomonaden. Ber. Deutsch. 
Bot. Ges. 39: 236-248. f.1-6. 10S 1921. 
Pemberton, C. C. Overgrowth of stumps of conifers. Canad. 
Field Nat. 35: 81-87. f. 1-4. 22 N 1921. 
Perry, W. J. Some observations on the relation of soil moisture 
to height growth of pine saplings. Jour. For. 19: 752, 
wea IN 394; , 
Perry, W. J. Yellow pine reproduction. Jour. For. 19: 622- 
631.. O: 19021. 
Plaisance, G. P., & Hammer, B. W. The mannitol-producing 
organisms in silage. Jour. Bact. 6: 431-443. S 1921. 
Pomeroy, C. S. Bud variation in Eleagnus. Jour. Heredity 
12: 227-230. f. 10, 20.° 34 S 1621. 
