Journal of Agricultural Research . Journal of Agricultural Research Washington, D. C. Termites of the Canal Zone Plate 8. Journal of Agricultural Research Washington, D. C PLATE 8 Cryptotermes thompsonae A.—Section of oak base of revolving bookcase damaged by Cryptotermes thompsonae,A neon, C. Z. B.—Pellets of excrement from this wood. Natural size of pellet by —Same as B. More highly magnified to show impressions. 60378—24 3 THE ABSORPTION OF CARBON BY THE ROOTS OF PLANTS • By J. F. Breazeale Associate Biochemist, Western Irrigation Agriculture, Bureait, of Plant Industry, Unit
Journal of Agricultural Research . Journal of Agricultural Research Washington, D. C. Termites of the Canal Zone Plate 8. Journal of Agricultural Research Washington, D. C PLATE 8 Cryptotermes thompsonae A.—Section of oak base of revolving bookcase damaged by Cryptotermes thompsonae,A neon, C. Z. B.—Pellets of excrement from this wood. Natural size of pellet by —Same as B. More highly magnified to show impressions. 60378—24 3 THE ABSORPTION OF CARBON BY THE ROOTS OF PLANTS • By J. F. Breazeale Associate Biochemist, Western Irrigation Agriculture, Bureait, of Plant Industry, United States Department of Agriculture In an experience of several years in fertilizer and nutrition investiga-tions the writer frequently has had occasion to run cultures of wheatseedlings in solutions of the salts of the three fertilizer elements, nitrogen,potassium, and phosphorus, singly and in all combinations. Whenworking under known conditions, ^vith pure materials, on ashing thecrop thus grown and dissolving the ash for a potassium or phosphorusdetermination, he has almost without exception found that
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