CURRENT LITERATURE 



635 



■iT At^igPiC&M INOUSTaiE lj"^ 









Mtwim 



«i 



IS THE ENEMY ON 

 YOUR FARM? 



This is a war of endurance. 

 Men and money are imporlar.t 

 but — food counts mosl. Soldiers 

 vlio fi<;lit must eat. So must their 

 dependents at home. The world 

 must be fed. 



Every idle acre of reclaimable 

 land on your farm aids the enemy. 

 Kvery acre of untilled soil de- 

 prives many needy mouths of food. 



The sinking of each food ehlp 

 is a disaster, but the idle acres of 

 America could grow more food 

 per year than all of the enemy's 

 submarines can destroy. 



Fight the enemy now, with 



RED CROSS FARM POWDER 



It is the most efficient reclaimer 

 of cut over, boulder strewn or 

 swanij) land. It helps to solve the 

 labor problem, enables one man 

 to do the work of many and does 

 it better and quicker. 



Get our big book free 

 Learn the facts on farming 

 with Farm P<,wder— the safe, quick 

 .and efficient method. Send today 

 for your copy of 



The Giant Laborer No. 350 F 

 E. I. du Pont de Nemours & Co. 

 Wilmington, Delawar* 



E^.- Ti!r?3 





i t <'{i i'i'i Aitiii-aiii.i liil^ 



R. Morgan Elliott & Co. 



PATENT ATTORNEYS 



MECHANICAL, ELECTRICAL & CHEMICAL EXPERTS 



723-731 woodward building 

 Washington. D. C. 



INV^^ 





PATENTS 



uucn Ihc sliyhtest iiiipro\eiiienl. i^rutci-lca 

 by patent, nieans thousands of dollars to the 

 iavcntor. uur Bulletins list hundreds of in 

 ventions greatly needed, especially in farm 

 implements, automobile accessories, house- 

 hold specialties and toys. Bulletins and book 

 ■of .idvice free. Simply mail a postcard. 

 'Lancaster & Allwlne, Registered Att'ys. 

 Uuray bldg. Washington. " ^ 



Periodical Articles 



Miscellaneous periodicals 

 .-\erial age, July 30, 1917.— How to test lum- 

 ber for dryness, by Thomas D. Perry, 

 p. 681-2. 

 .Aviation, July IS, 1917. — Kapok and some 

 of its uses, by Charles Garrison, p. 565. 

 Aviation, August 1, 1917. — Testing moisture 

 content in lumber, by Thomas D. Perry, 

 p. 37-8. 

 .\viation, August 15, 1917. — The controlled 

 saturated atmosphere expansion method 

 of lumber drying, by Thomas D. Perry, 

 p. 103-4; The controlled unsaturated 

 atmosphere expansion method of lum- 

 ber drying, by A. J. Henry, p. 105. 

 .■Xviation, Sept. 1, 1917. — The economical 

 arrangement of dry kilns, by Thomas 

 D. Perry, p. 169-71. 

 Botanical gazette, Aug., 1917. — A survey 

 of the Hawaiian land flora, by Vaughan 

 MacCaughey, p. 89-114; Reproduction 

 in the coniferous forests of northern 

 New England, by Harrington Moore, 

 p. 149-58. 

 Breeders' gazette, Aug. 16, 1917. — Uncle 

 Sam, range cowman, by Will C. Barnes, 

 p. 203-4. 

 Country boy, Aug., 1917. — How to stop 



fires, by A. F. Potter, p. 6. 

 Country gentleman, July 21, 1917.— Trees 



of the tropics, p. 21. 

 Country gentleman, Sept. 1, 1917. — The 

 farmers' $200,000,000 woodlot; supply- 

 ing lumber for army cities, airships, 

 gunstocks and dyestufls, by H. E. C. 

 Bryant, p. 9, 32. 

 Country life, July 7, 1917. — Timber for 



aeroplanes, by A. D. Webster, p. 21. 

 International socialist review, June, 1917. — 

 Spring drive of the lumber jacks, by 

 C. E. Payne, p. 729-30. 

 Journal of heredity, Sept., 1917.— Pitcher- 

 leaved ash trees, by George H. Shull, 

 p. 431. 

 Journal of the Franklin institute, Sept., 

 1917. — The chemistry of cellulose and 

 its important industrial applications, by 

 H S. Mork, p. 353-70. 

 National geographic magazine, April, 1917. 

 — Friends of our forests, by Henry 

 W. Henshaw, p. 297-321. 

 Philippine journal of science, Sec. C, Jan., 

 1917. — The origin and dispersal of 

 Cocos nucifera, by O. Beccari, p. 27-43. 

 Popular science monthly, Aug., 1917. — 

 Teaching the proper care of forests by 

 object lesson models, p. 199. 

 Science, Sept. 7, 1917. — Plant ecology and 

 its relation to agriculture, by Warren 

 G. Waterman, p. 223-8 ; Innoculations 

 on Ribes with Cronartium ribicola, by 

 Perley Spaulding, and G Flippo Grav- 

 att, p. 243-4. 

 Scientific American, Sept. 1, 1917. — How 

 forest fires are discovered and reported, 

 p. 166, 

 Scientific American supplement, July 21, 

 1917. — Protecting our timber resources; 

 using the heliograph to fight forest 

 fires, by Arthur L. Dahl, p. 33, 36. 



Today 



Make it a 

 Point to 



eM/or 



I7VERYONE who 

 *-' plants the seed for a 

 tree of the future is help- 

 ing to repair the ravages 

 caused by war. To those 

 who look ahead it is ap- 

 parent that the people 

 of this country must 

 learn to plant a tree each 

 time one is cut down. 



TREE 

 SEEDS 



are of particular value, 

 are carefully chosen 

 and are preferred by 

 those who, instead 

 of taking chances, de- 

 sire to make certain 

 that the seeds they plant 

 will grow into strong 

 trees, of full size, luxuri- 

 ant as to shade and fruit. 



Buying Thorburn's means 

 buying the best seeds 



J. M. Thorburn & Co. 



ESTABLISHED 1802 

 53-5 Barclay Street 



through to 



54 Park Place 

 NEW YORK 



