CURRENT LITERATURE 



509 



amjltonttatch 



'-'The Wa tch-'Jlf jRailroad Accuracy 



II MMIlliMllill III 



No need to add or subtract a 

 minute or so to or from the time a 

 Hamilton tells. The Hamilton is depend- 

 ably accurate. It tells true time all the time. 

 Ask any reputable jeweler about Hamilton 

 Accuracy and he will unqualifiedly recommend it. 



Hamilton Watches are made in many models at $17.00, 



$25.00, $28.00, $40.00, $50.00, $80.00, and so on 



up to $150.00, which your jeweler can show 



you in cased watches and in movements 



alone, to fit j'our present watch case, $12.25 



($13.00 in Canada) and up. 



Write for Hamilton Watch Book, 

 "The Timekeeper." 



It pictures and describes the various 

 Hamilton models for men and women, and 

 tells facts worth knowing about watches. 



HAMILTON WATCH COMPANY 



Dept. 39 



Lancaster, Pennsylvania 



I 



Expert Service 



is Demanded 



by Modern Business 



Methods 



Forest Engineering 



is expert service in the application 

 of scientific and economic engineering 

 knowledge and experience to forests 

 and their products. It is essential to 

 modern timberland ownership and 

 operation, and equally important to 

 the distributor and consumer of wood. 



The Field Covers 



Technical Advice and 



Practical Service 



in acquiring, estimating and mapping 

 timber; in making valuations; in 

 management; in selling either stump- 

 age or manufactured product; in 

 selecting grades or kinds to meet your 

 service requirements; and in preserva- 

 tive treatment to prevent decay. 



S. B. DETWILER 



FOREST ENGINEER 



COMMERCIAL TRUST BUILDING 

 PHILADELPHIA, PA. 



PARK and ESTATE 



FORESTRY 



Logging Reports Utilization Studies 



Timber Estimates Forest Planting 

 Etc. 



Methods and Cost of Mosquito 

 Eradication 



P. L. BUTTRICK 



Forester and Mosquito Expert 

 P. O. Box 607 New Haven. Conn. 



Timber Estimates 



FirePrdtectionPlans 

 Maps.LoggingReports 

 EmpireStateForesters 



1S6 FiftxAvlNewYdrkCity 



FO 



1 



RE 



2 



ST 



3 



RY 



4 



THE FOREST 



IS THREE-FOURTHS OF 



FORESTRY 



Your opportunities are as unlimited as 

 our forests if you study at 



WYMAN'S SCHOOL OF THE WOODS 



IncorporaUd Munislng. Michigan 



Amenagement des forets d'Alsace, p. 

 97-101 ; Emploi du pin noir dans la 

 restauration des forets devastees par 

 les faits de guerre, by A. Jolyet, p. 

 102-9; Les forets de France et la 

 guerre, by C. de Lesseux, p. 110-15. 



Revue des eaux et forets. May 1, 1916. — 

 Lepicea d'Orient, by A. Jolyet, p. 

 129-37. 



Skogen, May, 1916. — Om landets vedbehov 

 (Concerning the country's need of 

 wood), by J. Beck-Friis, p. 141-2; Vi 

 och naturen (Nature and we), by E. 

 Backlin, p. 142-52 ; Miirgborrfaran for 

 vara tallskogar (The danger of the 

 bark beetle to our pine forests), by A. 

 Sylven, p. 153-61 ; Nagra ordi i mar- 

 buskfragan (A few words regarding 

 the question of advance growth), by F. 

 Lindberg, p. 162-3 ; Nyare arbeten over 

 den stora snytbaggen och dess be- 

 kiimpande (Recent investigations re- 

 garding the large snout beetle and its 

 control), by L Tragardh, p. 164-76; 

 Arvidsjaursklaven (The Arvidsjaur 

 calipers), by F. Lindberg, p. 177-8. 



Skogen, June, 1916. — L branslefragan (The 

 fuel question), by E. Andersson, p. 

 181-3 ; Meddelanden fran svenska 

 skogsvardsf oreningen ( Contributions 

 from the Swedish forestry associa- 

 tion), p. 184-96. 



Skogsvardsfdreningens tidskrift, May, 1916. 

 Skogsvard och skogsforvaltning (For- 

 est protection and forest administra- 

 tion), by C. G. Barthelson and others, 

 p. 447-83; Jattebarkborren (The giant 

 bark borer, Dendroctonus micans), by 

 L Tragardh, p. 484-6; Om svenska 

 Juniperus-jatter (Some giant speci- 

 mens of Juniperus in Sweden), by 

 K. V. O. Dahlgren, p. 487-98. 



Tidsskrift for skogbruk, June, 1916. — Bem- 

 erkninger om endel fremmede traeslag 

 (Remarks concerning some foreign tree 

 species), by Hodal, p. 258-66; Nogen 

 ord i aniedning av skogforvalter Ag- 

 nar Barths artikel " Norges skoger med 

 stormskridt mot undergangen " (A few 

 words regarding A. Earth's article on 

 " Norway forests are hastening to de- 

 struction"), by H. E. Berner, p. 266- 

 72 ; Det norske skogselskaps reprae- 

 sentant-og aarsmote (The Norwegian 

 forestry association's committee meet- 

 ing and annual meeting), p. 272-4; 

 Tommerkubering efter laengde og top- 

 maal (Determining the volume of 

 timber in accordance with length and 

 top diameter), by E. Archer, p. 274-82; 

 Litt om feillaerens anvendelse iskog- 

 bruket (A little concerning the use of 

 false teachings in forestry), p. 283-7. 



Yale forest school news, July 1, 1916. — 

 Forestry propaganda in China, by D. Y. 

 Lin, p. 31-2; Forestry in Hawaii, by 

 C. S. Judd, p. 32-3 ; Developing a world 

 market for timber, by H. R. MacMillan, 

 p. 34; Forestry in Quebec, by G. C. 

 Piche, p. 34-S. 



