PHOTOSYNTHESIS 29 



While it is impossible, with our present knowledge, to even 

 guess at the mechanism by which protoplasm condenses formalde- 

 hyde into sugars and these, in turn, into more complex carbo- 

 hydrates, the structure and relationships to each other of the final 

 products of photosynthesis are well known, and are discussed at 

 length in the following chapter. 



References 



BARNES, C. R. "Physiology" (Part II of Coulter, Barnes and Cowles' "Text- 

 book of Botany"), 187 pages, 18 figs., Chicago, 1910. 



GANONG, W. F. "Plant Physiology," 265 pages, 65 figs., New York, 1908 

 (2ded.). 



JOST, L., trans, by GIBSON, R. J. H "Plant Physiology," 564 pages, 172 figs., 

 Oxford, 1907. 



MARCHLEWSKI, L. "Die Chemie der Chlorophyll," 187 pages, 5 figs., 7 plates, 

 Berlin. -1909. 



PARKIN, JOHN. "The Carbohydrates of the Foliage Leaf of the Snowdrop 

 (Galanthus nivalis L.) and their Bearing on the First Sugar of Photosyn- 

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PFEFFER, W., trans, by EWART, A. J. "Physiology of Plants." Vol. I, 632 

 pages, 70 figs., Oxford, 1900. 



