10 ADVENTURES IX EADIOISOTOPE RESEARCH 



95 Phosphorus Exchange in Yeast (with K. Linderstrom-Lang and N. Niel- 



sen) 9 IG 



96 Potassium Interchange in Yeast Cells (with N. Nielsen) 918 



97 Note on the Number of Pollen Grains Identified in the Fruit of the 



Aspen (with C. Eklundh-Ehrenberg and H. Euler) 924 



Lectures 



98 Some Applications of Isotopic Indicators. Nobel Lecture 928 



99 The Application of Radioactive Indicators in Biochemistry. Faraday 



Lecture 961 



100 Historical Progiess of the Isotopic Methodology and its Influences 

 on the Biological Sciences. Read at the Turin Meeting of the 

 Society of Nuclear Medicine 997 



Index 1039 



