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Konorsky, J.:Mechanisms in Animal Behavior. Symp. Soc. Exp. Biol., vol. 4, Academic Press, 1950.

Eccles, J. C.:The Neurophysiological Basis of Mind. Oxford Univ. Press (London), 1953.

Thorpe, W. H.:Learning and Instinct in Animals. Methuen (London), 1956.

Sperry, R. W.:On the Neural Basis of the Conditioned Response. Brit. J. Anim. Behav., vol. 3, 1955, p. 41.

Burns, B. D.:The Mammalian Cerebral Cortex. Monographs Physiol. Soc. (London), vol. 5, 1958.

Krech, D.; Rosenzweig, M. R.; and Bennett, E. L.:Dimensions of Discrimination and Level of Cholinesterase Activity in Cerebral Cortex of the Rat. J. Comp. Physiol. Psychol., vol. 49, 1956, p. 261.

Krech, D.; Rosenzweig, M. R.; and Bennett, E. L.:Correlation Between Brain Cholinesterase and Brain Weight Within Two Strains of Rats. Am. J. Physiol., vol. 196, 1959, pp. 31-32.

Bennett, E. L.; Rosenzweig, M. R.; Krech, D.; Karlsson, H.; Dye, N.; and Ohlander, A.:Individual, Strain, and Age Differences in Cholinesterase Activity of the Rat Brain. J. Neurochem., vol. 3, 1958, p. 153.

Rosenzweig, M. R.; Krech, D.; and Bennett, E. L.:Effect of Pentobarbital Sodium on Adaptive Behavior in the Rat. Science, vol. 123, 1956, pp. 371-372.

Rosenzweig, M. R.; Krech, D.; and Bennett, E. L.:A Search for Relations Between Brain Chemistry and Behavior. Psychol. Bull., vol. 57, 1960, p. 476.

Hyden, H.:Biochemistry of the Central Nervous System. Pergamon Press (New York), 1959.

Hyden, H.; and Egyhazi, E.:Nuclear RNA Changes of Nerve Cells During a Learning Experiment in Rats. Proc. Natl. Acad. Sci. U.S., vol. 48, 1962, p. 1366.

Brachet, J.; and Mirsky, A. E.:The Cell: Biochemistry, Physiology, Morphology. Vol. IV, ch. 5. Academic Press (New York), 1960.

Tower, D. B.; and Schade, J. P.:Structure and Function of the Cerebral Cortex. Elsevier (New York), 1960.

Dingman, W.; and Sporn, M. B.:The Incorporation of 8-Azaguanine Into Rat Brain RNA and Its Effect on Maze Learning by the Rat. An Inquiry Into the Biochemical Basis of Memory. J. Psychiatric Res., vol. 1, 1961, pp. 1-11.

Adey, W. R.; Kado, R. T.: Didio, J.; and Schindler, W. J.:Impedance Changes in Cerebral Tissue Accompanying a Learned Discriminative Performance in the Cat. Exp. Neurol., vol. 7, 1963, pp. 282-293.

Brattgard, S. O.:Acta Radiol. Suppl., vol. 96, 1952, p. 1.

Geiger, A.:Correlation of Brain Metabolism and Function by the Use of a Brain Perfusion MethodIn Situ. Physiol. Rev., vol. 38, 1958, pp. 1-20.

Geiger, A.:Metabolism of the Nervous System. D. Richter, ed., Pergamon Press (New York), 1957.

Thompson, R.; and McConnell, J.:Classical Conditioning in the PlanarianDugesia dorotocephala. J. Comp. Physiol. Psychol., vol. 48, 1955, p. 65.

McConnell, J. V.; Jacobson, A. L.; and Kimble, D. P.:Effects of Regeneration Upon Retention of a Conditioned Response in the Planarian. J. Comp. Physiol. Psychol., vol. 52, 1959, p. 1.

Corning, W. C.; and John, E. E.:Effects of Ribonuclease on Retention of a Conditioned Response in Regenerating Planarians. Science, vol. 134, 1961, p. 1363.

Gerathewohl, S. J.; and Gernandt, B. E.:Physiological and Behavioral Sciences, Vol. 1, NASA SP-11, 1962, pp. 399-413.

Von Bekesy, G. J.:DC Potentials and Energy Balance of the Cochlear Partition. Acoust. Soc. Am., vol. 23, 1951, p. 576.

Trincker, D.:Bestandspotentiale in Bogengangssystem des Meerschweinchens und ihre Anderungen bei Experimentellen Cupula-Ablenkunges. Arch. Ges. Physiol., Bd. 264, 1957, p. 351.

Livingston, R. B.:Neural Mechanisms of the Auditory and Vestibular Systems. Ch. 25, G. L. Rasmussen and W. F. Windle, eds., Charles C Thomas (Springfield, Ill.), 1960.

Brodal, A.:Neural Mechanisms of the Auditory and Vestibular Systems. G. L. Rasmussen and W. F. Windle, eds., Charles C Thomas (Springfield, Ill.), 1960.

Brodal, A.; Pompeiano, O.; and Walberg, F.:The Vestibular Nuclei and Their Connections, Anatomy, and Functional Correlations. Charles C Thomas (Springfield, Ill.), 1960.

Carpenter, M. B.:Neural Mechanisms of the Auditory and Vestibular Systems. Ch. 22, G. L. Rasmussen and W. F. Windle, eds., Charles C Thomas (Springfield, Ill.), 1960.

Dow, R. S.; and Moruzzi, G.:The Physiology and Pathology of the Cerebellum. Univ. Minn. Press (Minneapolis), 1958.

Kempinsky, W. H.:Cortical Projection of Vestibular and Facial Nerves in the Cat. J. Neurophysiol., vol. 14, 1951, p. 203.

Mickle, W. A.; and Ades, H. W.:A Composite Sensory Projection Area in the Cerebral Cortex of the Cat. Am. J. Physiol., vol. 170, 1952, p. 682.

Walzl, E. M.; and Mountcastle, V.:Projection of Vestibular Nerve to Cerebral Cortex of the Cat. Am. J. Physiol., vol. 159, 1949, p. 595.

Anderson, S.; and Gernandt, B. E.:Acta Oto-Laryngol. Suppl., vol. 116, 1954, p. 10.

Gernandt, B. E.; and Thulin, C. A.:Vestibular Mechanisms of Facilitation and Inhibition of Cord Reflexes. Am. J. Physiol., vol. 172, 1953, pp. 653-660.

Gernandt, B. E.; and Terzuolo, C. A.:Effect of Vestibular Stimulation on Strychnine-Induced Activity of the Spinal Cord. Am. J. Physiol., vol. 183, 1955, pp. 1-8.

Gernandt, B. E.; Katsuki, Y.; and Livingston, R. B.:Functional Organization of Descending Vestibular Influences. J. Neurophysiol., vol. 20, 1957, pp. 453-469.

Gernandt, B. E.; and Gilman, S.:Vestibular and Propriospinal Interactions and Protracted Spinal Inhibition by Brain Stem Activation. J. Neurophysiol., vol. 23, 1960, pp. 269-287.

Gernandt, B. E.; and Gilman, S.:Interactions Between Vestibular, Pyramidal and Cortically Evoked Extrapyramidal Activities. J. Neurophysiol., vol. 23, 1960, pp. 516-533.

Akert, K.; and Gernandt, B. E.:Electroencephalog. Clin. Neurophysiol., vol. 14, 1962, p. 383.

Gerathewohl, S. J.; and Ward, J. E.:The Physics and Medicine of the Upper Atmosphere and Space. O. O. Benson and H. Strughold, eds., John Wiley & Sons, Inc., 1960, ch. 26.

Gerathewohl, S. J.:Personal Experiences During Short Periods of Weightlessness Reported by Sixteen Subjects. Astronaut. Acta, vol. 2, 1956, pp. 2O5-217.

Henry, J. P.; Augerson, W. S.; Belleville, R. E.; Douglas, W. K.; Grunzke, M. K.; Johnston, R. S.; Laughlin, P. C.; Mosely, J. D.; Rohles, F. H.; Voas, R. B.; and White, S. C.:Effects of Weightlessness in Ballistic and Orbital Flight. Aerospace Med., vol. 33, 1962, pp. 1056-1068.

Dayhoff, M. O.; Lippincott, E. R.; and Eck, R. V.:Thermodynamic Equilibria in Prebiological Atmospheres. Science, vol. 146, 1964, p. 1461.

Armstrong, G. T.; Furukawa, G. T.; and Hilsenrath, J.:A Survey of Thermodynamic Properties of the Compounds of the Elements CHNOPS. NBS Rept. 8521, U.S. Dept. Com., 1964.

White, W. B.; Johnson, S. M.; and Dantzig, G. B.:J. Chem. Phys., vol. 28, 1958, p. 751.

Jukes, T. H.:Present Status of the Amino Acid Code. J. Am. Dietet. Assoc., vol. 45, 1964, p. 517.

Nirenberg, M. W.; and Matthaei, J. H.:The Dependence of Cell-Free Protein Synthesis in E.coliupon Naturally Occurring or Synthetic Polyribonucleotides. Proc. Natl. Acad. Sci. U.S., vol. 47, 1961, p. 1588.

Ochoa, S.:Chemical Basis of Heredity, the Genetic Code. Experientia, vol. 20, 1964, p. 57.

Kiesow, L.:The Energy-Transforming Step in Nitrobacter-Chemosynthesis. Biochem. Z., Bd. 338, 1963, p. 400.

Kiesow, L.:On the Assimilation of Energy From Inorganic Sources in Autotrophic Forms of Life. Proc. Natl. Acad. Sci. U.S., vol. 52, 1964, p. 980.

Clayton, R. K.; and Adler, H. I.:Protein Synthesis and Viability in X-IrradiatedRhodopseudonomonas spheroides. Biochim. Biophys. Acta, vol. 56, 1962, p. 257.

Pollard, E.; and Vogler, C.:Radiation Action on Some Metabolic Processes in E.coli. Radiation Res., vol. 15, 1961, p. 109.

Novelli, G. D.; Kameyama, T.; and Eisenstadt, J. M.:Cold Spring Harbor Symp. Quant. Biol., vol. 26, 1961, p. 133.

Kepes, A.:Kinetics of Induced Enzyme Synthesis. Determination of the Mean Life of a Galactosidase-Specific Messenger RNA. Biochim. Biophys. Acta, vol. 76, 1963, p. 293.

Fernandez-Moran, H.:New Approaches in Correlative Studies of Biological Ultrastructure by High-Resolution Electron Microscopy. J. Roy. Microscop. Soc., vol. 83, 1964, p. 183.

Fernandez Moran, H.:Electron Microscope-Medicines Research: Tool of Unfulfilled Promise. J. Am. Med. Assoc. 189, 1964, p.31.

Fernandez Moran, H.:Electron Microscope With High Field Superconducting Solenoid Lenses. Proc. Natl. Acad. Sci. U.S., vol.53, 1965, p. 445.

Deaver, B. S. Jr.; Swedlund, J. B.; and Bradley, H. Jr.:Magnetic Properties of Some Macromolecules of Biological Interest. Final Rept. PHU 4644. Stanford Res. Inst., 1964.

Sisakyan, N. M.:Problems of Space Biology. Vol. I, USSR Acad. Sci. Publ. House (Moscow) 1962.

Sisakyan, N. M. and Yazdovskiy V. I.,: Problems of Space Biology. Vol. III. USSR Acad. Sci. Publ. House (Moscow), 1964.

Jenkins D. W.,: The NASA Biosatellite Program.InLife Sciences and Space Research III, M. Florkin, ed,. North-Holland Publ. Co. (Amsterdam), 1965, pp. 230-240.

Pack N.:The Effects of Weightlessness on Mammals. Space Biology: Proc. 24th Annual Biol. Colloq., Oregon St. Univ., 1963, pp. 65-74.

Anon.:A Review of Space Research. Ch. 9, Natl. Acad. Sci.-Natl. Res. Council. Publ. 1079, 1962.

Committee on Environmental Biology: Report of Panel on Radiation Biology. Space Science Board, Natl. Acad. Sci.-Natl. Res. Council, 1963.

Taleot, J. M.:Life Support in Space Operations. Air Univ. Rev., vol. 16, 1965, pp. 42-52

Del Duca, M. G.; Konecci, E. B.; and Ingelfinger A. L.:Life Support-the Next Generation. Space Aeronautics, vol. 41, 1964, pp. 84-91.

Bongers. L.; and Kok B.:Life Support for Space Missions. Develop. Ind. Micro-biol., vol. 5, 1964, pp. 183-195.

Ward, C. H.; Wilks. S. S.; and Craft, H. L.;Use of Algae and Other Plants in the Development of Life Support Systems. Am. Biol. Teacher, vol. 25, 1963, pp. 512-521.

Ney L. F.:Gas Exchange by the Duckweed Family. ONR Contract No. Nonr-2887(00), Stanford Res. Inst., 1960.

Nakamura, H.:A Study of Wolffia as a New Food. Rept. Microalgal Res. Inst. Japan., vol. 1, 1960, pp. 7-13.

Myers, J.:Basic Remarks on the Use of Plants as Biological Gas Exchangers in a Closed System.InEpitome of Space Medicine. J. Aviation Med., vol. 25, 1954, pp. 407-411.

Bowman, N. J.:The Food and Atmosphere Control Problems on Space Vessels. J. Brit. Interplanet. Soc, vol. 12, 1953, pp. 118-123.

Bowman, N. J.:The Food and Atmosphere Control Problems on Space Vessels. Part II. The Use of Algae for Food and Atmosphere Control. J. Brit. Interplanet. Soc. Vol. 12, 1953, pp. 159-166.

Bassham, J. A.:Experiments With Photosynthetic Gas Exchangers. Proc. World Symp. Appl. Solar Energy, Phoenix, Ariz., 1955, pp. 35-50.

Burk D.; Hobby, G.; and Gaucher, T.:Closed-Cycle Air Purification With Algae. Proc. First Intern. Symp. Submarine Space Med. Macmillan Co. (New York), 1958.

Dole, S. H.; and Tamplin, A. R.:The Sabatier Reaction for Inorganic Recovery of Oxygen in Manned Space Capsules.InClosed Circuit Respiratory Systems Symp. Tech. Rept. 60-574, Wright Air Develop. Div., 1960, pp. 239-287.

Clifford, J. E.; and McCallum, J.:Research on the Electrolysis of Water Under Weightless Conditions. AMRL-Tech. Doc. Rept. 62-44, 1962.

Clifford, J.; and Faust, C.:Research on Electrolysis of Water With a Hydrogen Diffusion Cathode To Be Used in a Rotating Cell. AMRL-Tech. Doc. Rept. 62-94, 1962.

Rupaske, R.:Nutritional Requirements forHydrogenomonas eutropha. J. Bacteriol, vol. 83, 1962, pp. 418-422

Bongers, L.:Chemosynthetic Gas Exchanger. Quarterly Progress Rept. No. 4 on NASA Contract NASw-971, 1965, 23 pp.

Bongers, L.:Chemosynthetic Gas Exchanger. Ann. Rept. on NASA Contract NASw-713, 1964, 44 pp.

Bongers, L.:Chemosynthetic Gas Exchanger. Rept. RM 153-1963. Martin-Marietta Space Systems Div. (Baltimore, Md.), 1963

Bongers, L.:Sustaining Life in Spaceâ€”A New Approach. Aerospace Med., vol. 35, 1964, pp. 139-144.

Schlegel, H.G.:Die Verwendung von H2-oxydierenden Bakterien zur Regenerierung der Atemluft. Raumfahrtforschung, Bd. 8. Nr. 2, 1964, pp. 65-67.

Webb. P., ed.:Bioastronautics Data Book. NASA SP-3006, 1964.

Foster. J. F.; and Litchfield, J. H.:A Continuous Culture Apparatus for the Microbial Utilization of Hydrogen Produced by Electrolysis of Water in Closed-Cycle Space Systems. Biotech. Bioeng., vol. 6, 1964, pp. 441-456.

Callaway. D.; and Margen, S.:Nutritional Properties ofHydrogenomonas eutropha. Semiann. Progr. Rept., NASA Grant NGR-05-003-(089), 1965.

Working Group on Gaseous Environment for Manned Spacecraft: Summary Report. Space Science Board. NAS/NRC, 1963.

Lawton, R. W.:Physiological Considerations Relevant to the Problem of Prolonged Weightlessness. Astronaut. Set. Rev., vol. 4, 1962, pp. 1-16.

McCally, M.; and Lawton. R. W.:The Pathophysiology of Disuse and the Problem of Prolonged Weightlessness: A Review.AMRL-Tech. Doc. Rept.63-3, Aerospace Med. Div. (Wright-Patterson AFB, Ohio), 1963.

Smith, R. E.; and Hock, R. J.:Brown Fat: Thermogenic Effector of Arousal in Hibernators. Science, vol. 140, 1963, p. 199.

Storer. J. B.; and Hempelman L. H.:Hypothermia and Increased Survival Rate of Infant Mice Irradiated With X-rays. Am. J. Physiol., vol. 171, 1952, pp. 341-348.

Working Group on Nutrition and Feeding Problems: Summary Report. Space Science Board. Man-in-Space Comm., NAS/NRC, 1963.

Anon.:Conference on Nutrition in Space and Related Waste Problems. NASA SP-70, 1964.

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