CONTENTS 9 



75 Attempts to Find Products Blocking Nucleic Acid Foimation in the 



Circulation of an Irradiated Organism (with L. Ahlstrom, H. Euler 

 and K. Zerahn) 7oH 



76 Fate of The Nucleic Acid Inlroduccd into the Circulation (with L. 



Ahlstrom and H. Euler) 7() I 



77 Formation of Nucleic Acid in Sarcoma Slices, (with L. Ahlstrom and 



H. Eulorl 770 



78 Application of Labelled Substrates in the Study of Enzymic Processes 



(with L. Ahlstrom and H. Euler) 78:i 



79 Effect of X-Rays on the Incorporation of Carbon- J 4 into Desoxy- 



ribonucleic Acid ~!) 1 



80 Effect of X-Rays on the Incorporation of Carbon- 14 into Animal 



Tissue 79:i 



81 Effect of X-Rays on the Incorporation of 14-C into Tissue Fractions 



of the Mouse (with G. Dreyfus) 795 



82 Effect of Muscular Exercise and of Urethane Administration on the 



Incorporation of Carbon- 14 into Animal Tissue 82 1 



83 Effect of Irradiation by X-Rays on the Exhalation of Carbon Dioxide 



by the Mouse (with A. Forssberg) 825 



84 Effect of X-Rays and Hormones on Resorption Rate of Injected 



Nai^HCOg, (with A. Forssberg) 828 



85 Note on the Effect of X-Rays and Hormones on the Resoiption Rate 



of Injected Na^HCOg (with A. Forssberg) 8:iS 



86 Effect of Irradiation with. X-Rays on the Catabolism of Methyl- 



alcohol in the Mouse 841 



87 Effect of Irradiation with X-Rays on the Catabolism of Ethylalcohol 



in the Mouse 847 



88 Radioactive Tracers in Radiobiological Studies. The Thiity-Sixth 



Silvanus Thompson Memorial Lecture 851 



Botanical Studies 



89 The Absorption and Translocation of Lead by Plants 87(i 



90 Atomic Dynamics of Plant Growth (with K. Lindersti0m-Lang and 



C. Olsen) 884 



91 Exchange of Phosphorus Atoms in Plants and Seeds (with K. Linder- 



strem-Lang and C. Olsen) 887 



92 Interaction Between the Phosphorus Atoms of the Wheat Seedling 



and the Nutrient Solution 89 I 



93 Exchange of Nitrogen Atoms in the Leaves of the Sunflower (with 



K. Linderstrem-Lang, A. S. Keston and C Olsen) 905 



94 Zinc Uptake by Neurospora (with I. Andersson-Kotto) 910 



