154 INDEX TO AMERICAN BOTANICAL LITERATURE 
Loeb, J. The physiological basis of morphological polarity in regener- 
ation—I. Jour. Gen. Physiol. 1: 337-362. f. 1-18. 20 Ja 1919. 
Longyear, B. O. The dandelion in Colorado. Colorado Agr. Exp. 
Sta. Bull. 236: 1-35. f. 1-16. Ja 1918. 
MacCaughey, V. The genus Morinda in the Hawaiian flora. Plant 
World 21: 209-214. Au 1918. 
MacCaughey, V. The strand flora of the Hawaiian Archipelago—ll. 
Ecological relations. Bull. Torrey Club 45: 483-502. 23 D 1918. 
Massey, L. M. The diseases of roses. Trans. Mass. Hort. Soc. 
1918: 81-101. pl. 1, 2. 1918. 
Massey, L. M. Rose diseases. Am. Rose Annual 1917: 92-101. 
Fi Dy Fir 1ORF: 
Matz, J. Report of laboratory assistant in plant pathology. Florida 
’ Agr. Exp. Sta. Rep. 1917: 87R-94R. f. 9-15. My 1918. 
Includes notes on pecan dieback and an undescribed Gnomonia on pecan leaves. 
McClintock, J. A. Sweet potato diseases. Virginia Truck Exp. Sta. 
Bull. 22: 455-486. f. ro8—r2r. 1 Ja 1917. 
Melhus, I. E., & Vogel, I. H. Cabbage diseases. Iowa Yearbook 
Agr. 18: 435-438. f. 1-3. 1918. 
Merrill, E. D. Oreomyrrhis borneensis Merr. sp. nov., an interesting 
addition to our knowledge of the Malayan flora. Am. Jour. Bot. 
§: 514, 515. pl. 30... D 1918. 
Murrill, W. A. Three young Crusoes. i-xii + 1-218. pl. 1, 2+ 
jf. 1-83. New York. 1918 
Contains some botanical information of the West Indies. 
Nafziger, T. E. How sorghum crosses are made. Jour. Heredity 9: 
4at, 320: 12 DD 7018; 
Nash, G. V. Salvia farinacea. Addisonia 3: 77, 78. pl. r19. 30 D 
1918. 
Nash, G. V. Spiraea Thunbergii. Addisonia 3: 63, 64. pl. 112. 
30 D 1918. 
Newman, C. C., & Leonian, L. A. Irish potato breeding. South 
Carolina Agr. Exp. Sta. Bull. 195: 1-28. f. r-19. Je 1918. 
Oberholser, H. C. The status of the genus Orchilus Cabanis. Proc. 
Biol. Soc. Washington 31: 203, 204. 30 D 1918. 
Osborn, H. F. Algonkian bacteria and popular science. Science II. 
46: 432-434. 2 .N 1917. 
Osterhout, W. J. V. Comparative studies on respiration—I. Intro- 
duction. Jour. Gen. Physiol. 1: 171-179. f. 1. N 1918 
