16 BULLETINS OF THE BUREAU OF PLANT INDUSTRY. 



* No. 10. Kentucky Bliiegrass Seed : Harvesting, Curing, and Clean- 



ing. By A. J. Pieters, Botanist in Charge of Seed Lab- 

 oratory, and Edgar Brown, Assistant Botanist, Botanical 

 Investigations and Experiments. 1902. 19 pp., 6 pis., 

 3 figs. Price, 10 cents. 



Contents : Introduction — Distribution of Kentucky bluegrass — Quality of 

 seed required by the foreign trade — Adulteration — Source of the market sup- 

 ply — Factors controlling the profitable harvesting of seed — Yield per acre and 

 total crop — ^Harvesting: Season; harvesting green seed; methods; kinds of 

 strippers — Curing: Present methods; turning the ricks; heating; relative 

 merits of indoor and outdoor curing — Cleaning — Effect of curing on the vital- 

 ity of the seed : Germination tests ; summary of results — Artificial curing — 

 Conclusions. 



No. 20. Manufacture of Semolina and Macaroni. By Robert P. 

 Skinner, Consul General at Marseille. 1902. 31 pp., 5 

 pis., 6 figs. Price, 15 cents. 



Contents : Introduction : A neglected opportunity ; development of the 

 industry in France ; French metadine wheats ; growth of the demand for maca- 

 roni ; need of growing the durum wheat — The market for durum wheat : Wild 

 Goose wheat ; prospective demand for American hard wheat and semolina ; 

 European methods and products ; scouring the grain — Manufacture of semo- 

 lina : Using Avheat from different countries; cleaning the wheat; percentage 

 of semolina in different wheats ; importance of cleanliness ; the milling proc- 

 ess ; classification of products — ]Manufacture of macaroni : The process ; 

 mixing the semolina ; curing operations — Durum wheat for bread flour — Tables 

 of exports, imports, and prices. 



* No. 21. List of American Varieties of Vegetables for the Years 



1901 and 1902. By AV. W. Tracy, jr.. Assistant, Botan- 

 ical Investigations and Experiments. 1903. 402 pp. 



Contents : Introduction — Rules of nomenclature — Eules for entering — List 

 of abbreviations of names of seedsmen — List of varieties : Artichoke ; aspara- 

 gus ; bush lima bean ; green-podded bush bean ; pole bean ; pole lima bean ; 

 wax-i)odded bush bean ; garden beet ; sugar beet and mangel-wurzel ; broc- 

 coli ; Brussels sjarouts ; burnet ; cabbage ; cardoon ; carrot ; cauliflower ; cel- 

 eriac ; celerj' ; chervil ; chicorj- ; chives ; chvif as ; collards ; field corn ; f)op 

 corn ; sweet corn ; corn salad ; cress ; cucumber ; dandelion ; eggplant ; endive ; 

 f etticus ; flag ; French spinach ; garlic ; German celery ; grass nuts ; gumbo ; 

 herbs ; horse-radish ; kale ; kohl-rabi ; leek ; lettuce ; martj-nia ; melon ; musk- 

 melon ; mustard ; okra ; onion ; orach ; oyster plant ; parsley ; parsnip ; pea ; 

 peanut ; pepper ; pieplant ; pumpkin ; radish ; rampion ; rhubarb ; roquette ; 

 salsify ; scolymus ; scorzonera ; skirret ; sorrel ; spinach ; squash ; sunflower ; 

 Swiss chard ; tomato ; garden turnip ; ruta-baga ; watermelon. 



f No. 22. Injurious Effects of Premature Pollination; Tvith General 

 Notes on Artificial Pollination and the Setting of Fruit 

 without Pollination. By Charles P. Hartley, Assistant 

 in Physiology', Plant Breeding Laboratory, Vegetable 

 Pathological and Physiological Investigations. 1902. 

 48 pp., 4 pis., 1 fig. Price, 10 cents. 



Contents : Introduction — Experiments with tobacco blossoms : Microscopic 

 study of tobacco pistils and ovaries — Experiments with blossoms of Datura 

 tatuia — Experiments with cotton blossoms — Experiments with orange blos- 

 soms — Experiments with tomato blossoms — Conclusion — Explanation of plates. 



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