SELECTED BIBLIOGRAPHY 335 



of a bean plant growing in the field. Point out the possible sources of 

 error in the method. 

 9. One source of error in the "dry weight" method of measuring photosynthesis 

 is that translocation of foods occurs away from the leaves. Would this 

 error be reduced if the phloem of the petioles could be cut? Would any 

 other errors be introduced? 



10. A green plant in a sealed glass vessel containing air enriched with CO2 



was exposed to light of very low intensity for several hours. The air in 

 the chamber was found to contain the same quantity of O2 at the end as 

 at the beginning of the experiment. Does this indicate that no photosyn- 

 thesis has taken place? 



11. Since only a small percentage of the incident light is utilized in photosyn- 



thesis why cannot the light intensity be reduced to this value without 

 retarding the rate of photosynthesis? 



Suggested for Collateral Reading 



Duggar, B. M., Editor. Biological effects of radiation. McGraw-Hill Book 

 Co, New York, 1936. 



Spoehr, H. A, Photosynthesis. Chemical Catalog Co, New York, 1926. 



Spoehr, H, A,, and J, ]\I, McGee, Studies in plant respiration and photosyn- 

 thesis. Carnegie Inst, Wash, Publ, No, 325, Washington, 1923. 



Stiles, W. Photosynthesis. Longmans, Green and Co, London, 1925, 



WillstJitter, R., and A. Stoll. Untersuchungen iiber die Assimilation der 

 Kohlensdure. Julius Springer. Berlin. 191 8, 



Selected Bibliography 



Baly, E, C. C, and J, B. Davies. The photosynthesis of naturally occurring 



compounds. III. Photosynthesis in vivo and in vitro. Proc. Roy. Soc. 



(London) A. 116: 219-226. 1927. 

 Baly, E. C. C, and N, R. Hood. The photosynthesis of naturally occurring 



co/npounds. IV. The temperature coefficient of the photosynthesis of 



carbohydrates from carbonic acid. Proc, Roy, Soc. (London) A, 122: 



393-398. 1929. 

 Barton-Wright, E, C, and M. C, Pratt, Studies in photosynthesis. I. The 



formaldehyde hypothesis. Biochem, Jour. 24: 1210-1216. 1930. 

 Brown, H., and F. Escombe. Researches on some of the physiological processes 



of green leaves, etc. Proc. Roy. Soc. (London) B. 76: 29-137, 1905, 

 Chapman, A, G,, and W, H, Camp, Starch synthesis in the variegated leaves 



of Pelargonium, Ohio Jour, Sci, 32: 197-217, 1932, 

 Craig, F, N,, and S. F, Trelease, Photosynthesis of Chlorella in heavy water. 



Amer, Jour, Bot, 24: 232-242. 1937. 

 Denny, F. E, The twin-leaf method of studying changes in leaves. Amer. 



Jour, Bot, 17: 818-841, 1930, 

 Emerson, R, Photosynthesis. Ann. Rev, Biochem, 6: 535-556, 1937, 

 Emerson, R., and W, Arnold, A separation of the reactions in photosynthesis 



by means of intermittent light. Jour, Gen, Physiol, 15: 391-420. 1932. 



