INDEX 



205 



Echinocardiiim cordatum, ratio of 

 adenine + thymine to cytosine 

 + guanine in DNA, 50 



End groups in undegraded DNA, 

 absence of — ?, 53, 129 



Escherichia coli, DNA produced by 

 thymine auxotrophs in the pres- 

 ence of bromouracil, 143-147 



— , equimolarity of the bases in 

 DNA, 51, 86 



— , invariability of total RNA, 105 



— , K-12 strain DNA, 30, 31, 86, 

 87 



— , longer all-thymine than all- 

 ey tosine stretches in DNA, 149 



— , molar ratios of bases present in 

 DNA, 51, 86, 87 



— , nucleotide ratios in nucleopro- 

 tein, 94, 119 



— , — in RNA, 69, 119 



— , pleromeric relationships in 

 DNA, 154 



— protoplasts, method of isolation 

 of DNA, 130 



— , transformation by DNA, 26 



5-Fluorouracil, incorporation into 

 DNA, 152, 156 



Fractionation of deoxypentose nu- 

 cleic acids at the nucleoprotein 

 stage, 57, 58, 66-69, 121, 123 



GC type DNA, 28, 31, 51, 66, 86, 

 128, 141, 142, 164, 165, 170 



Genes and specificity of DNA in 

 chromosomes, 32 



Genetic apparatus of the cell and 

 DNA, 71 



Genetic determinants and nucleic 

 acid chains, many determinants in 

 one DNA chain or one DNA 

 chain for each determinant, 121 



Genetics, biochemistry, and nucleic 

 acids, 163, 164 



Hemophilus influenzae (continua- 

 tion) 

 — , type b and c, DNA, 26 

 — , type c, DNA, 30, 31 

 Heredity, definition. 111 

 — , first steps towards a chemistry 



of _, 109-124 

 Heterogeneity of nucleic acids as 



regards composition and sequence 



characteristics, 128 

 Hierarchy, existence of — in the 



cell, 1, 63, 100, 101, 117, 185 

 High-molecular cell constituents, 



identity and diversity, 2-5 

 Homogeneity of nucleic acids in the 



cell, 127-128 

 Homotopes and pleromers in 



DNA's, 157 



— in polymer constitution, defini- 

 tion, 131 



Homotopy and pleromerism and 

 the neighbor problem in forma- 

 tion of nucleic acids, 153-158 



— of thymine and 5 -methylcy tosine 

 in rye germ DNA, 155 



Human tissues, composition of DNA 

 from various — (table), 15 



— , differential distribution analy- 

 sis of DNA of spleen (table),' 

 138 



— , isolation of sperm DNA, 7 



— , molar ratios of nucleotides in 

 DNA of spleen, liver and other 

 tissues, 12, 14, 30, 87, 92 



— , pyrimidine 3 ',5 '-diphosphates 

 from DNA, differential analysis, 

 pyrimidine distribution, 92, 122, 

 138 



Hydrolysis of the nucleic acids, 10- 

 11 



5 -Hydroxy methylcy tosine, 86 



— in bacteriophage nucleic acids, 

 52 



— in DNA of E. coli phages, 66 



Harmony of cellular life, 4 

 Hemophilus influenzae, transforma- 

 tion by DNA, 26 



Identification of the macromolecu- 

 lar compounds of cellular origin, 

 3, 4, 104 



