ff J 



^ ANNALS OF THE NEW YORK ACADEMY OF SCIENCES K 



Volume 108, Art. 2 Pages 339-616 



June 29, 1963 



Editor Managing Editor 



Harold E. Whipple Stanley Silverzweig 



LIFE-LIKE FORMS IN METEORITES AND THE PROBLEMS 

 OF ENVIRONMENTAL CONTROL ON THE MORPHOLOGY 

 OF FOSSIL AND RECENT PROTOBK 



Consulting Editor 

 Bartholomew Nagy 



CONTENTS 



itroductory Remarks. By J. Joseph Lynch, S. J 341 



nvironmental Biophysics and Microbial Ubiquity. By J. R. Vallentyne 342 



"he Influence of Water Currents on the Life Functions of Algae. By John L. Blum. . 353 

 'he Structure of Diatom Communities under Varying Ecological Conditions. By Ruth 



Patrick 359 



^'eli Structure and Environment. By B. J. Cholnoky 366 



The Morphology of PPLO and Bacterial L Forms. By Louis Dienes 375 



Axenic Culture of Paramecium — Some Observations on the Growth Behavior and Nu- 

 tritional Requirements of a Particle-bearing Strain of Paramecium aurelia 299X. 



By Anthony T. Soldo 380 



The Effect of Pollution on River Algae. By C. Mervin Palmer 389 



Ultrastructure Research as an i\id in the Classification of Diatoms. By R. Ross 396 



Morphology of Representative Blue-Green Algae. By Roy E. Cameron 412 



Loricae and Cysts in the Chrysophyceae. By Pierre Bourrelly 421 



Morphological Trends among Fossil Algae. By J. Harlan Johnson 430 



Paleoecological Considerations of Growth and Form of Fossil Protists. 5y Paul Tasch. 437 

 Fossil Organisms from Precambrian Sediments. By Elso S. Barghoorn and Stanley 



A. Tyler 451 



Bacteria from Paleozoic Salt Deposits. By Heinz Dombrowski 453 



Fossil Protobionta and Their Occurrence. By A. Papp 461 



Studies in Experimental Organic Cosmochemistry. By J. Or6 464 



Evaluation of Radiation Effects in Space. By Rainer Berger 482 



Abiotic Production of Primitive Protein and Formed Microparticles. By Sidney W. 



Fox AND Shuhei Yuyama 487 



Observations on the Nature of the "Organized Elements" in Carbonaceous Chondrites. 



By Frank W. Fitch and Edward Anders 495 



On the Origin of Carbonaceous Chondrites. By Edward Anders 514 



* This series of papers is the result of a conference on The Problems of Environmental Control 

 ^-^ on the Morphology of Fossil and Recent Protobionta held by The New York .\cademv of Sciences 



^ on April 30 and May 1, 1962. 





