viii Contents 



The Structure of DNA, by J. D. Watson and F. H. C. Crick 193 



Fine Structure of a Genetic Region in Bacteriophage, by Seymour 



Benzer 209 



Induction of Specific Mutations with 5-Bromouracil, by Seymour 



Benzer and Ernst Freese 220 



Experiments on Photoreactivation of Bacteriophages Inactivated with 



Ultraviolet Radiation, by R. Dulbecco 228 



Genetic Recombinations Leading to Production of Active Bacteriophage 

 from Ultraviolet Inactivated Bacteriophage Particles, by S. E. 

 LuRiA and R. Dulbecco 247 



Inactivation of Bacteriophages by Decay of Incorporated Radioactive 



Phosphorus, by Gunther S. Stent and Clarence R. Fuerst 280 



Resistance to Ultraviolet Light as an Index to the Reproduction of 



Bacteriophage, by S. Benzer 298 



Investigations on a Lysogenic Bacillus Megaterium, by Andre Lwoff 



and Antoinette Gutmann 312 



Induction of Bacteriophage Lysis of an Entire Population of Lysogenic 

 Bacteria, by Andre Lwoff, Louis Siminovitch and Niels 

 Kjeldgaard 332 



Lysogeny and Genetic Recombination in Escherichia coli K12, by 



Elie L. Wollman and Franqois Jacob 334 



Spontaneous Induction of the Development of Bacteriophage \ in 



Genetic Recombination of Escherichia coli K12, by FRANgois Jacob 



and Elie Wollman 336 



Transduction of Lysogeny in Escherichia coli, by FRANgois Jacob 339 



Recombination between Related Temperate Bacteriophages and the 

 Genetic Control of Immunity and Prophage Locahzation, by 

 A. D. Kaiser and F. Jacob 353 



Pagination of ike papers in this collection is indicated by the boldface 



number centered at the bottom of the page. Other page numbers appearing 



on certain papers refer to original publication. 



