324 



A. N. BELOZERSKIÏ 



Table i 



DNA composition of Escherichia coli and Azotobacter agile 0-22 

 in relation to age of culture* 



* The following abbreviations have been adop ted in Tables i , 3 and 5 : Pur — purine 

 bases, Pyr — pyrimidine bases, G — guanine, A — adenine, C — cytosine, and T — thymine. 



Table 2 



RNA composition of Escherichia coli and Azotobacter agile D-22 

 in relation to age of culture* 



* The following abbreviations have been adopted in Tables 2, 4 and 6: Pur — purine 

 nucleotides, Pyr — pyrimidine nucleotides, G — guanylic acid, A — adenylic acid, C — cyti- 

 dylic acid, and U — uridylic acid. 



