14 BULLETINS OF THE BUREAU OF PLAINT INDUSTRY. 



lands ; soils ; grasses and other forage plants ; the white-ash prairies ; bottom 

 lands ; soils ; forage crops ; land values ; sand dunes ; native sand binders ; 

 methods of preventing drifting and reclamation of waste dunes ; beach grass ; 

 sea lyme grass; utilization of sand dunes — The redwood belt — Fodder crops: 

 Fodder crops now cidtivated ; plants recommended for cultivation or trial — 

 Poisonous jjlants — Fungous parasites — Phytographic notes — Summary — Index. 



* f No. 13. Experiments in Kange Improvement in Central Texas. 



By H. L. Bentley, Special Agent, Grass and P'orage 



Plant Investigations. 1902. 72 pp., 2 pis., 6 figs. 



Price, 10 cents. 



Contents : Introduction — History of the first year's work : Selection of the 

 land; plan of experiments; carr,ying capacity of the pastures; seeding the 

 ground ; conclusions from the first year's work — History of the second year's 

 work : Experiments with varieties ; range improvement ; catching wind-blown 

 seeds ; transjilanting grass roots ; baling legumes and fodder plants ; exhibits 

 at fairs ; summary — History of the third year's work : Weather conditions ; 

 grass-garden work ; a failure noted ; a tentative success noted ; experiments 

 with grasses ; native grasses the best ; experiments with the coarser forage 

 plants ; range improvement ; transplanting grass roots : the cultivation of 

 pasture grasses — Summary : Cattle held on station pastures ; the matter of 

 cost — Hay and pasture plants recommended for central Texas : Grasses ; barn- 

 yard grass ; Bermuda grass ; buffalo grass ; bushy blue stem ; Colorado grass ; 

 cotton top grass ; crab grass ; curly mesquite ; everlasting grass ; gama grass ; 

 grama grasses ; Ijlack grama : blue grama ; side oats grama ; Johnson grass ; 

 knot grass; little blue stem; the millets; needle grass; rescue grass; the 

 sedges; smooth brome grass; the sorghums; Texas blue grass; white top 

 grass ; wild rye ; wild timothy ; other central Texas grasses ; legumes in 

 central Texas \ alfalfa or lucern ; Turkestan alfalfa ; oasis alfalfa ; Florida 

 beggarweed ; the clovers ; alsike clover; bur clover ; mammoth clover ; red 

 clover ; Russian red clover ; sweet clover ; white clover ; peas and beans ; 

 cowpea ; field pea ; gram or chick pea ; INIetcalf bean ; soy bean ; sulla ; velvet 

 bean; vetches; spring vetch ; hairy vetch; other forage plants ; common oats 

 and wheat ; peanuts ; rape ; saltbushes ; sanf oin ; sweet potato ; tallow weed ; 

 teosinte — Conclusion. 



* No. 14. The Decay of Timber and :Methods of Preventing It. By 



Hermann von Schrenk, Instructor in Henry Shaw School 

 of Botany and Special Agent in Charge of Mississippi 

 Valley Laboratory. Vegetable Pathological and Physio- 

 logical Investigations. 1902. 96 pp., 18 pis., 27 figs. 

 Price, 55 cents. 



Contents : Introduction : Scope of this report — Structure of timber : Wood 

 cells, wood fibers, etc. ; chemical nature of wood ; mechanical nature of wood ; 

 life of the wood cells ; heart and sap wood — Factors- which cause the decay of 

 wood: General remarks ; agents which cause deeaj' ; how. fungi and bacteria 

 grow; rate of growth and decay; natural resistance of timber ; sawn versus 

 hewn timber ; seasoned versus green timber ; races of wood ; variability in 

 timber; summarj' — Timber preservation: Introduction; theory of impregna- 

 tion ; retrogressive changes which take j)lace in impregnated wood — Results of 

 timber impregnation : Introduction ; experiment made in Texas — Results of 

 timber impregnation in Eurojie — Ties, poles, etc. : Kinds of timber ; form; tie 

 specifications"; splitting; stacking; summary — Ballast — Tie plates — Fasten- 

 ing — Methods of impregnation: Introduction; effect of seasoning after treat- 

 ment; results of treatment; conclusions; creosoting ; summary; zinc chlo- 

 ride and coal-tar oil ; Hasselmann treatment ; new processes ; the senilization 

 process ; emulsion treatment ; creo-resinate process ; Ferrel process ; conclu- , 

 sions — Removal and disposal of ties — Records — Conclusions and recommenda- 

 tions : Seasoning of timber ; sawn and hewn timber ; form of tie ; preservative 

 processes ; changes which treated timber imdergoes ; utilization of inferior 

 timbers ; the growing of tie timber ; causes of decay of timber — Bibliograj)hy — 

 Appendix. 



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