Smithsonian miscellaneous collections . hotographic negatives of Abraham Lincoln. 2 pp., 4 pis. Oct. 16, 1936. (Publ. 3400.) 19. Abbot, C. G. Cycles in tree-ring widths. 5 pp., i fig. Dec. 16, 1936. (Publ. 3402.) 20. Burkholder, Paul R., and Johnston, Earl S. Inactivation of plant growth substance by light. 14 pp., 2 pis., i fig. Feb. 5, 1937. (Publ. 3403.) 21. Hoover, W. H. The dependence of carbon dioxide assimilation in a higher plant on wave length of radiation. 13 pp., 3 pis.,4 figs. Feb. 27, 1937. (Publ. 3406.) 22. Resser, Charles Elmer. Third contribution to nomenclature of Cambrian tri
Smithsonian miscellaneous collections . hotographic negatives of Abraham Lincoln. 2 pp., 4 pis. Oct. 16, 1936. (Publ. 3400.) 19. Abbot, C. G. Cycles in tree-ring widths. 5 pp., i fig. Dec. 16, 1936. (Publ. 3402.) 20. Burkholder, Paul R., and Johnston, Earl S. Inactivation of plant growth substance by light. 14 pp., 2 pis., i fig. Feb. 5, 1937. (Publ. 3403.) 21. Hoover, W. H. The dependence of carbon dioxide assimilation in a higher plant on wave length of radiation. 13 pp., 3 pis.,4 figs. Feb. 27, 1937. (Publ. 3406.) 22. Resser, Charles Elmer. Third contribution to nomenclature of Cambrian trilobites. 29 pp. Apr. 5, 1937. (Publ. 3408.) 23. Abbot, C. G. On the corrections to be applied to silver-disk pyrheliometry. 7 pp. Mar. 10, 1937. (Publ. 3409.) 24. McAlister, E. D. Time course of photosynthesis for a higher plant. 17 pp., 2 pis., 10 figs. May 4, 1937. (Publ. 3410.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOLUME 95. NUMBER 1 IRoebling jfunb OBSERVING THE SUN AT 19,300 FEET ALTITUDE,MOUNT AUNCONQUILCHA, CHILE BYC. P. BUTLER. (Publication 3 379) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION FEBRUARY 18, 1936 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOLUME 95, NUMBER 1 IRoebling jFunb OBSERVING THE SUN AT 19,300 FEET ALTITUDE,MOUNT AUNCONQUILCHA, CHILE BYC. P. BUTLER
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