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FOREST BOTANY 369 



Fuller, A. S. (7312) 



THE FOREST TREE CULTURIST : A TREATISE ON THE CULTIVATION OF AMERICAN 

 FOREST TREES, WITH NOTES OF THE MOST VALUABLE FOREIGN SPECIES. 188 pp., 



illus. New York. 



Gaskill, Alfred. (7313) 



electric wires and shade trees. Amer. City 8 : 270-272, illus. 1913. 



Oilman, It. B. (7314) 



THE PRUNING BOOK, AN ILLUSTRATED STATEMENT OF TESTED METHODS OF PRUNING 

 AND A WARNING AGAINST THE MISTAKES SO COMMONLY MADE. Ed. 5, 110 pp., 



illus. Philadelphia. 1925. 



Glendinning, W. E. (7315) 



tree maintenance on state highways. Calif. State Bd. Forestry Bien. 

 Kept. 9: 67-71, illus. 1921-22. 



G reeves-Carpenter, C. F. (7316) 



THE CARE OF ORNAMENTAL TREES IN PLANTING, FERTILIZING, PRUNING, TREE 



surgery, and spraying. 70 pp., illus. New York. 1928. 

 Grimes, J. L. (7317) 



RELATION OF SIDEWALKS TO SHADE TREE PLANTING. Amer. City 8 : 499-501, 



illus. 1913. 



Hansen, A. H. (7318) 



should our city trees be labeled? Amer. Forestry 26: 27-28, illus. 1920. 



Harper, F. J. (7319) 



preventing harmful tree trimming. Telephony 16 (9) : 347-349, illus. 1908. 



Holsworth, W. C. (7320) 



care of park trees. Parks and Recreation 6 : 28-31, 157-162. 1922. 



Houser, J. S., and Dietz, H. F. (7321) 



present status of oil sprays, Natl. Shade Tree Conf . Proc. 6 : 74-82. 1930. 



Irish, C. F. (7322) 



the process of aeration and fertilization of tree roots by means of com- 

 pressed air. Natl. Shade Tree Conf. Proc. 5 : 35-37. 1929. 



Jacobs, H. L. (7323) 



fertilization of shade trees ; part l : fall vs. spring fertilization. Davey 

 Tree Expert Co., Research Dept. Bull. 4, 28 pp., illus. 1929. 



(7324) 



fertilization of shade trees ; PART 2 : chemical fertilizers for conifers ? 



Davey Tree Expert Co., Research Dept. Bull. 5, 16 pp., illus. 1930. 



(7325) 



research needed on shade tree ferthizers. Amer. Fertilizer 73 (1) : 36-38, 



48-59, illus. 1930. 



(7326) 



shade tree fertilizing. Shade Tree 2 (8) : 2-3. 1929. 



Jenkins, E. H., and Britton, W. E. (7327) 



the protection of shade trees in towns and cities. Conn. Agr. Expt. Sta. 

 Bull. 131, 30 pp., illus. 1900. 



Kaplan, J. S. (7328) 



improving the sub-soil of deep-rooted park trees. Amer. City (city ed.) 

 22 : 20-21, illus. 1920. 



Kwasigrooh, P. J. (7329) 



course in tree trimming. 133 pp., illus. Milwaukee. 1929. 



Lawton, C. F. (7330) 



CARING FOR TWENTY-THREE HUNDRED ELM TREES. Amer. City 6: 656. 1912. 



Lazenby, W. R. (7331) 



TREES FOR SHADE, SHELTER AND ORNAMENT. Ohio Agr. Col. Ext. Bull., V. 9, 



no. 5, 16 pp., illus. 1914. 

 Levison, J. J. (7332) 



HOW TO PLANT A SHADE TREE, AND HOW TO CARE FOR IT THE FIRST FEW YEARS. 



Amer. Forestry 21 : 992-999, illus. 1915. 

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