508 



IW^T'^TU 



AMERICAN FORESTRY 

 yiiiiijiiiiiiiiiiii i iiiiiiiiiiiuiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii iiiir _ 



Famous For Its Accuracy 



It's just as easy for you to have accurate time as it is for these 

 railroad men. It's easier in fact, for your watch doesn't get the 

 constant vibration their watches have to stand. 



amiltonHJatch 



"The Watch of Railroad Accuracy" 



Over 759t of the value of a fine watch movement is invisible. It is the time, 

 care and skill employed in putting it together, and in making the minute final 

 af'justments, that constitute the difference betvi'cen a fine watch movement and 

 one which merely looks like it. 



Write for Hamilton Watcft Booh — "The Timekeeper" — -which 

 will enable you to appreciate the good points of a high-grade watch. 



The lowest-priced Hamilton is a movement alone for $13.00 f$14.00 in Canada^. 

 The hifihest-priced Hamilton is our Masterpiece at $!50.00 in ISk extra-heavy 

 gold case. Other Hamiltons at $26.50. $30.00, $40.00, $55.00, $80.00, $110.00, etc. All 

 have Hamilton accuracy, beauty and durability. 

 HAMILTON WATCH COMPANY Depl. 39 Lancaster, Pennsylvania 



R. Morgan Elliott & Co. 



PATENT ATTORNEYS 



MECHANICAL ELECTRICAL ft CHEMICAL EXPERTS 



723-731 woodward building 

 Washington D. C. 



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PATENTS 



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 1>> [idieiit, means iIkjiis<iik1s oI dollars U> ihe \ 

 iu%cmor. Uiir llultctiiis list hundreili o( iti ■ 

 ventiuns greatly ntrcilctl, esi^ecially iii fanii 

 iiiii>lc:iii<-[ils, aiituiiiobilc atLCSSorics. lioiise- 

 holfl spctialtics iiiul t.iys. liulletins aiul Ixjok 

 ->( ,.i1mlc free. Simply mail a posttaril. 



^Lancaster dt AHwlne. Registered Att'ys. 



^^y stici Uura> \iU\K ^^asliin^tun. I>. C. 



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IT will more than pay you to secure our ex- 

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 2ind is the card index for seeurluy what you 

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Write for terms: or send your order for 100 

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Send for Our Desk Calendar 



A Icxt-buok of papcr-inaking. 4th ed. 

 507 p. il., pi. London, E. & F. N. 

 Spon, 1916. 



United States — Federal trade commission. 

 Book paper industry. 11 p. Wash.. 

 D. C, 1917. (U. S.— 65th congress— 

 1st session. Senate document no 3). 



United States — Federal trade commission. 

 Report on the news-print paper indus- 

 try. 162 p. Wash.. D. C. 1917. 



Wood Preservation 



.\incrican wuod-ijrcservcrs' association. 

 Proceedings of the thirteenth annual 

 meeting. 538 p. il. Baltimore, Md,, 

 1917. 



Hclphcnstine, Rufus K.. Jr. Quantity of 

 wood treated and preservatives used in 

 the United States in 1916. 23 p. Balti- 

 more, Md., American wood-preservers' 

 association, 1917. 



Auxiliary Subjects 



PiirL-s 



Fitclil)urg, Mass. — Park commissioners. 

 Annual report, 1916. 56 p. pi. Fitdi- 

 hurg, Mass., 1917. 



United States — Dept. of the interior — Na- 

 tional jiark service. General informa- 

 tion regarding Glacier national park, 

 season of 1917. 40 p. maps. Wash., 

 1). C. 1917. 



United States — Dept. of the interior — Na- 

 tional park service. General informa- 

 tion regarding Mount Rainier iiatinnal 



park, season of 1917. 40 p. map.'; 

 Wash., D. C. 1917. 



United States — Dept. of the interior — Na- 

 tional park service. General informa- 

 lion regarding Rocky mountain na- 

 tional park, season of 1917. 24 p. maps 

 Wash., D. C, 1917. 



United States— Dept. of the interior— Na- 

 tional park service. General informa- 

 tion regarding Sequoia and Genera! 

 Grand national parks, season of 1917. 

 40 p. maps. Wash.. D. C, 1917. 



United States— Dept. of the interior— Na- 

 tional park service. General informa- 

 tion regarding Wind Cave national 

 park, season of 1917. 17 ]). ma|)S. 

 Wasli., D. C. 1917. 



Periodical Articles 



M isii-lliriitiins ptTiodicals 



.American review of reviews, July, 1917. 

 .American shiphuilding, a real re^ai^ 

 sance, hy Winthrop L. Marvin, p. 63-72 ; 

 Mountain trails in New England, Ijy 

 Philip W. Ayres, p. 79-82. 



Biltmorean. June, 1917. — Timber estimating 

 methods used in eastern North Caro- 

 lina, by Howard R. Krinhill, p 13-21. 



Bulletin of the Torrey botanical club, June. 

 1917. — The relationship between the 

 osmotic concentration of leaf sap and 

 height of leaf insertion in trees, by J. 

 .Arthur Harris, and others, p. 267-86. 



Journal (if the American chemical society, 

 May, 1917. — The oleoresin of Douglas 

 fir, by A. W. Schorger, p. H)40-44. 



Journal of the .Ainerican institute of archi- 

 tects. May, 1917.— Structural service de- 

 partment, wood issue ; tiinber, lumber, 

 (Knickerbocker) Boyd, p. 246-62. 



Journal of the Franklin institute, July, 1917. 

 wood construction and finish, by D 

 Reclaiming the Everglades of Florida, 

 by Isham Randolph, p. 49-72. 



Missouri botanical garden bulletin, June, 

 1917. — Tree surgery, p. 91-7. 



National wool grower, June, 1917.— Pas- 

 ttircs and corrals in range lambing, by 

 L. H. Douglas, p. 26-8. 



New Zealand journal of agriculture, May 

 21, 1917. — Tree planting for farmers, 

 by W. H. Taylor, p. 378-88. 



Science. June 15, 1917. — The measurement 

 of light in some of its more important 

 pliysiilogical aspects, by D. T. Mac- 

 Dougal, and others, p. 616-18. 



Scientific American, June 16, 1917. — Wooden 

 ships and ship worms, by Howard F. 

 Weiss, p. 592, 601 ; New woods for 

 paper pulp: rescarcli in forest pr<ld\u■t^ 

 by the Forest service, bv Otto Krcs-. 

 p. 593. 



Scientific .American supplcnuiii. May 5. 1917. 

 Sand devastation; bow the dunes ad- 

 vance and how tlnir movement is 

 checked, by Percy Collins, p. 280-2. 



United States— Dept of agriculture. Month- 

 ly weather review. March, 1917. — Light- 

 ning and forest fires in California, by 

 Andrew H. Palmer, p. 99-103. 



L'nitcd States— Dept. of agriculture. Week- 



