28 BULLETINS OF THE BUREAU OF PLANT INDUSTRY. 



No. 63. Investigations of Rusts. By Mark Alfred Carleton, Cereal- 



ist in Charge of Cereal Investigations. 1904. 32 pp., 2 



pis. in colors. Price, 10 cents. 

 Contents : Additions to our knowledge of life histories : Enphorbia rust 

 (Uroniyces euphorbite C. and P.) ; sunflower rust (Puccinia helianthi Schw.) ; 

 crown rust of oats (Puccinia rhamni [I'ers.] Wettst.) — Segreg-aton of host 

 plants : Black stem rust of Agropyron and Elymus ; orange leaf rust of 

 Agropyron and Elymus ; black stem rust of Agrostis alba vulgaris ; rust of 

 Chloris (Puccinia chloridis Diet.) ; rusts of willow and cottonwood (Melamp- 

 sora) — Winter resistance of the uredo : Uredo of Kentucky bluegrass rust 

 (Puccinia poarum Niels.) ; uredo of Puccinia montanensis Ell. — Emergency 

 adaptations : Puccinia vexans Farl. — Experiments with Lepto-uredinea? : Rust 

 of cocklebur (Puccinia xanthii Schw.) ; rust of velvet leaf (Puccinia hete- 

 rospora B. and C.) — Perennial species: Aecidium tuberculatum E. and K. ; 

 rust of Peucedanmn foeniculaceum — Description of plates. 



* No. 64. A Method of Destroying or Preventing the Growth of 



Algse and Certain Pathogenic Bacteria in Water Sup- 

 plies. By George T. Moore, Physiologist and Algolo- 

 gist in Charge of Laboratory of Plant Physiology, and 

 Karl F. Kellerman, Assistant in Physiology. 1904. 44 

 pp. Price, 5 cents. 



Contents : Introduction — Microscopical examination of drinking water — 

 Wide distribution of trouble caused by algse in water -supplies — Methods in 

 use for preventing bad effects due to algge — Desirability of other methods — 

 Determination of a physiological method — Effect of cojiper svilphate — Method 

 of aijplying the copper sulphate — Practical tests of the method: Water-cress 

 beds ; water reservoirs — Effect of copper upon pathogenic bacteria : Typhoid ; 

 Asiatic cholera — Comparison of effect of other disinfectants — Colloidal solu- 

 tions — Conclusions : Necessity of knowledge of organism and condition in 

 reservoir ; application of method for destruction of pathogenic bacteria not 

 designed to replace efficient means of filtration already in use ; medicinal 

 use ; conditions under which the Department of Agriculture can furnish 

 information and assistance in applying this method — Cost — Summary. 



No. 65. Eeclamation of Cape Cod Sand Dunes. By J. M. Westgate, 



Assistant in Sand-Binding Work. 1904. 38 pp., 6 pis. 



Price, 10 cents. 



Contents : Introduction — Ecological relations of the vegetation : Ecological 

 factors ; mode of deposition of the Cape sands ; development of the dune 

 range ; natural reclamation ; areas receiving gradual accumulations of sand ; 

 areas not receiving gradual accumulations of sand ; marshes and bogs ; early 

 accounts — Devastation of the established dune areas : Early conditions inci- 

 dent to the devastation ; restrictive legislation — Artificial reclamation of 

 the Cape sands : Early work of sand control ; recent work by the State ; 

 preliminary operations ; attempts without beach grass ; utilization of beach 

 grass; relative merits of spring and fall planting; selecting and transplant- 

 ing the sets; cost of planting; present status of the various plantings; 

 effectiveness of bru^h laying; efficiency of beach grass for sand binding; 

 necessity of ultimate f orestation ; miscellaneous operations on the sand ; road 

 construction; reclamation of small areas; commercial utilization of sand; 

 development of the protective beach ridge — The I'rovince lands : State owner- 

 ship ; value of the lands — Summary— Bibliography — Description of plates. 



* No. 66. Seeds and Plants Imported During the Period from Sep- 



tember, 1900, to December, 1903. Inventory No. 10; 

 Nos. 5501-9896. 1905. 333 pp. Price, 15 cents. 



Contents: Introductory statement — Inventory of seeds and plants im- 

 ported — Index of common and scientific names. 



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