INDEX TO AMERICAN BOTANICAL LITERATURE 161 
Lomanitz,S. A preliminary study of the effects of sodium chlo- 
ride upon aifalfa grown in solution cultures. Soil Sci. 16: 
183-102. pl, zr. 5S 023. 
Long, B. Naturalized occurrence of Prunus Padus in America. 
Rhodora 25: 169-177. 26 O 1923. 
MacMillan, H. G. Cause of sunscald of beans. Phytopath- 
ology 13: 376-380. 8S 1923. 
Malloch, W.S. Experimental accuracy in fruit breeding. Am. 
Nat. 57: 435-442. O 1923 
Malloch, W. S. The problem of breeding nematode-resistant 
plants. Phytopathology 13: 436-450. f. r, 2. 19 O 1923. 
Maxon, W. R. Notes on American ferns—XIX. Am. Fern 
Jour. 132°73-75. 3 O 1924. 
McGeorge, W. T. The chlorosis of pineapple plants grown on 
manganiferous soils. Soil Sci. 16: 269-274. O 1923. 
Merrill, E.D. Diagnoses of Hainan piants, II. Philipp. Jour. 
Sci. 23: 237-268. S 1923. 
Miller, E. C. & Saunders, A.R. Some observations on the tem- 
perature of the leaves of crop plants. Jour. Agr. Research 
26: 15-44. f. 1-8. 601923 
Newton, W. The rest period of Solanum tuberosum in relation 
to available nitrogen. Science II. 58: 207, 208. 145 1923. 
Nitschke, R. Die geographische Verbreitung der Gattung 
Acalypha. Bot. Archiv 4: 277-317. 101923. 
Nuttall, G. H. F. Symbiosis in animals and plants. Am. Nat. 
57: 449-475. O 1923. 
Ottley, A. M. A revision of the Californian species of Lotus. 
Univ. California Publ. Bot. 10: 189-305. pl. 61-82. 115 
1923. 
Overholts, L.O. The species of Poria described by Schweinitz. 
Mycologia 15: 207-232. pl. 21-24 + f. 1-30. 1551923. 
Paine, S. G. & Chaudhori, H. The blackleg disease of the po- 
tato. On the relationship of Bacillus atrosepvicus and 
