570 



diOOPONT AMEgJCAN INDUgTgj^ESIg 



P 



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AMERICA 



MUST FEED 



THE WORLD 



Europe is hungn'. Disaster lurks 

 in the vv;ike of siibiiiarines. The 

 loss of each food sliip is a tragedy. 

 But the idle acres of America 

 could grow more fcod per year 

 than all of the enemy's ships can 

 destroy. 



Every Idle Acre Helps the Enemy. 



Hinder rations and you hinder 

 victurv. Submarines will continue 

 to sink food ships. Other ships 

 and more food nnist take the 

 place of those destroyed. 

 Clear— Plow— Plant 



Remove the stumps and boul- 

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 Cultivate every available acre of 

 land. Don't let labor shortajje 

 hinder you. 



RED CROSS FARM POWDER 



will do the work of many men — 

 cheaper — better — qviicker. 



GET OUR BIG BOOK FREE 



j Kind out how Du Pont Red 



I Cross Farm Powder will not only 



j save you labor bvit will improve 



I your soil. 



I Send now for your copy of 



I The Giant Laborer No. 3S0F 



I E. I. du Pont de Nemours & Co., 



I Wilmint'ton, Delaware. 



R. Morgan Elliott & Co. 



PATENT ATTORNEYS 



MECHANICAL, ELECTRICAL a CHEMICAL EXPERTS 



723-731 woodward building 

 Washington. D. C. 



PATENTS 



i.Mtfii iliL- sliylnc^l iii.|.t...._-ii,ent, \'t"l.v< 

 by palcnl. means ihQi.s.nuls ul ilollars tu ilitr | 

 inventor. Uur liuUetms list hundretK o( in 

 vemions tjreatly needed, especially in farm 

 impleiiionts, automobile accessories, house- 

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AMERICAN FORESTRY 



CURRENT LITERATURE 



(Buuks and periodicals indexed in the 

 library of the United States Forest 

 Service.) 



Forestry as a Whole 

 Proceedinys and reports u] assocuilions, 



forest officers, etc. 

 .Association centrale pour I'amenagement 

 des montagnes Slatuts et reglement 

 intericur. 16 p. Bordeau-x, F. Pech & 

 cie, 1915. 

 I'erona. L'oeuvre de r.\ssociation centrale 

 pour I'amenagement des montagnes. 

 3Z p. il. Bordeaux, Impr. Gounouil- 

 hou, 1914. 

 Royal Scottish arboricultural society. 

 Transactions, vol. 31, pt. 2. 110 p. il, 

 pi. Edinburgh, 1917. 



Forest Education 

 forest sc'iools 



Idaho, University of — School of forestry. 

 .Announcements concerning the courses 

 to be offered in forestry, 1917-1918. 

 15 p. pi. Moscow, Id., 1917. 

 .\'orth Dakota state school of agriculture 

 and forestry. Eleventh annual catalog 

 number, 1916-17, with announcements 

 for 1917-18. 72 p. Bottineau, N. D., 

 1917. 

 Philippines, University of the — Forest 

 school. Catalogue, 1916-17 ; announce- 

 ments, 1917-18. 12 p. Manila, 1917. 

 Forest Description 

 Descombcs, Paul. Forets et paturages 

 d'ltalie. 20 p. il. Bordeaux, Ferct et 

 tils, 1913. 



Forest Botany 

 .Maiden, J. H. .\ critical revision u£ the 

 genus Eucalyptus, pts. 29-30. pi. Syd- 

 ney, N. S. W., Gov't, printer, 1917. 

 Forest Influences 

 Ucscombes, Paul. Le reboisement el les 

 condensations occultes. 5 p. Paris, As- 

 sociation francaise pour ravancenient 

 des sciences, 1914. 

 Descombes, Paul. Les reboisement ration- 

 nel et la meteorologie. 8 p. Tours, 

 Impr. E. .Arrault ct cie, 1914, 

 Forest Mensuration 

 Krinbill, Howard K. liinbiT cstiinaling 

 methods used in eastern North Caro- 

 lina. 9 p. Newbern, N. C, 1917. 

 Silviculture 

 Nefurestation 



Descombes, Paul. L'amenagemeiit des mon- 

 tagnes et le reboisement. 1() p. il 

 I'ordeaux, Feret et Ills, 1912. 

 Descumbes, Paul. La defense nationale et 

 I 'armature vegetale de la France. 23 p. 

 Paris, Louis De Soye, 191S. 

 Descombes, Paul. La penurie des hois 

 d'oeuvre et la nouvelle loi tendaiu a 

 favoriser le reboisement. 8 p. il. 

 Bordeaux, Feret et Ills, 1913. 

 1 Jiscombes. Paul. Le repeuplement des 

 montagnes et la defense nationale. 

 19 ]). Paris, Bureaux de la Revue 

 politique et parlementaire, 191(). 



>:< 



WITH two 

 billion icet 



of lumber per year 

 bein^ vitili/.eci for 

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Tree Seeds 



are chosen with 

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 <rro\\ strong, sturdy 

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 towering shady ma- 

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Tlie fruits (if the apple, 

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Buy Thorburn's and you are 

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J.IVl.Thorburn&Co. 



ESTABLISHED 1802 

 53 S. Barclay Street 



Through to 

 54 'Park Place 

 NEW YORK 



'Sendy& 



