INDEX TO AMERICAN BOTANICAL LITERATURE 491 
Rettger, L. F., Reddish, G. F., & McAlpine, J. G. The fate of. 
the bakers’ yeast in the intestine of man and of the white 
rat. Jour. Bact. 9: 327-337. Jl 1924. 
Reynolds, L. G. Female gametophyte of Microcycas. Bot. 
Gaz. 77: 391-403. f. 1-6 + pl. 28-29. 16 Je 1924. 
Rhoads, A. S. Apple measles, with special reference to the 
comparative susceptibility and resistance of apple varieties 
to this disease in Missouri. Phytopathology 14: 389-314. 
pl. 17-21. 21 Jl 1924. 
Ricker, P. L. Successful dogwood protection campaign. Nat. 
Mag. 4:11. “Jl” Je 1924. [lllust.] 
Robbins, C. A. Some new Cladonias. Rhodora 26: 145-148. 
20 Jl 1924. 
Including Cladonia clavulifera Wainio sp. nov. and a number of new 
forms and “modifications.” 
Sanford, S.N.F. Notes on some Rhode Isiand and southeastern 
Massachusetts plants. Rhodora 26: 127-129. “Je” 5 Jl 
1924. 
Santos, J. K. Determination of sex in Elodea. Bot. Gaz. 77: 
353-376. f. 1-8 + pl. 23-27. 16 Je 1924. 
Schaffner, J. H. Dichotomous branching in Equisetum. Am. 
Fern Jour. 14: 56-57. “‘Ap-Je”’ 12 Jl 1924. 
Schaffner, J. H. Equisetum laevigatum and its near relatives. 
Am. Fern. Jour. 14: 41-46. “Ap-Je”’ 12 Jl 1924. 
Schmitz, H. Notes on wood decay—Il. The comparative re- 
sistance to decay of edge-grained and flat-grained Douglas 
fir and western yellow pine lumber. Idaho Forester 6: 
12-15. 1924. 
Setchell, W. A. American Samoa: Part I. Vegetation of 
Tutuila Island. Part II. Ethnobotany of the Samoans. 
Part III. Vegetation of Rose Atoll. Dept. Marine Biol. 
Carnegie Inst. Wash. 20: i-vi, 1-275. f. 1-46 + pl. 1-37. 
e 1924. 
Including many new species and combinations. 
