DEPABTMENT BULLETINS l7 



R93 Exporlnipnts on toxic aition of rertain gasfis on Insects, seeds, and fungi. 

 N.ifirt and G. L. Garrison. 1020. 



894 Manual of d"si^'n and installation of Forrst Service water spray dry lilln. 



Tf.sdiil.'. 1920. 



895 The frwziug jioint of potatoes as determined by the tliermoelt'Ctric method. 



Wright lind K. H. Harvey. 19J1. 

 80C. The cost of produoini; cotton. L. A. Moorhou.se and M. II. Cooper. 1920. 



897. \Vei>,'ht variation of pacliage foods. II. Runkel. lOiiO. 



898. Turpentine. It.s sources, properties, u.-^en, transportation, and marlccting, with 



recommended specifications. F. V. Veitcli and V. E. GroDlsch. 1920. 

 890 O.vpsy moth Inc-banding material, how to make, use, and apply it. V. W. Collins 



and riifford K. Hood. 1920. 

 900. Grapevine looper. Dwight Isely. 1920. 

 001. Grapivine fleahcetl' . iKvight Iscly. 1920, 



902. The western cnlih.nge flea-lnetle, F. H. <'hiltenden and H. O. Marsh. 1920. 

 iliy.l. 'I'lip urape phylloxera in California. W. M. Davidson aqd U. !-«. Noiiijaret. 1921. 

 904. rrodiictlon and ntilixatlon of corn oil In I'nlted States. A. F. Sievers. 1920. 

 OO.'i. I'rinc-iplcs of livestock lirei'iiin^. Si wall Wri.'ht. 1920. 

 flOfi. The n-;c of concrete pipp in Irrigation. K. W. Stanley. 1921. 

 OO". Fumigation of citrus plants with hydrocyanic acid; conditions influencing injury, 



R. S. Woglum. 1920. 

 BOS. The Maine sardine industry. F. C. Wiber, H. W. Houghton, and J. R. Wilson. 



1921. 



009. Utilization of black walnut. Warren D. Rrush. 1921. 



010. Experience of Eastern farmers with motor trucks. H. R. Tollev and L. M. Church. 



19i;0. 

 nil. Life liisfory of the grape-herry moth in northern Ohio. II. G. Ingerson. 1920. 

 012. Hail insurance on farm crops in United States. V. N. Valgren. 1920. 

 91:;. The weslim f.irmer's wat<r right. 11. 1'. Tiele. 1920. 

 91* The red-handod leaf roller. F. H. Chittenden. 1920. 

 915. Toxicity of l»arlum carbonate to rats. Erich W. Schwartze. 1920. 

 4*10. Fneziug injury to potatoes when undercooled. R. C. Wright and George F. Taylor. 



1921. 

 017. Farm practice in growing field crops in three sugar-beet districts of Colorado. 



Samuel B. NuckoLs and Thomas II. Summers. 1921. 

 918. Report on Investigations of the pink bollwonn of cotton in Mexico. U. C. Loftin, 



K. B. .McKinncy. and W. K. Hanson. 1921. 

 019. Unit ref|iiirenients for producing milk in western Washington. T. B. Bain and 



G. E. Brnun. 1920. 



920. Farm profits — figures from the same farms for a series of years. Washington 



County, Ohio: Clinton County. Ind. ; and Dane County, Wis. H. M. Dixon and 

 n. W. Hawthorne. 1920. 



921. Sugar-cane juice clarification for sirup manufa-ture. J. K. Dale and C. S. Hudson. 



1920. 



922. Clover-leaf weevil. D. G. Tower and F. A. Fenton. 1920. 



92.'?. Unit requirements for producing market milk In Vermont. J. B. Bain, R. J. Posson, 

 and Ralph I'. Hotis. 1921. 



924. Tenr-.stnin of citrns fruits. .Tohn R. Winston. 1921. 

 9_'.">. .V tir.'ichytic variation in maize. .1. H. Kempton. 1921. 



926. Studies in the biology of the Mexican cotton-boll weevil on short-staple upland, 



long-staple upland, and sea-island cottons. George D. Smith. 1921. 



927. Commercial utlllration of waste seed from the tomato pulping Industry. J. IL 



Shrader aixl Frank Rahak. 1921. 



925. S\ibvtitiites for su'-rose in curing me.nts. Ralph Iloapland. 1921. 

 029. Cottonseed meal for horses. G. A. Bell and J. O. Williams. 1920. 



I':i0. The production of hinder twine fiber in the PhlMppine Islands. H. T. Edwards. 



1920. 

 9.11. Corn-belt farmers' experience with motor trucks. H. R. Tolley and L. M. Church. 



1921. 

 9.'J2. Life history of the codling moth in the Grand Valley of Colorado. E. 11. Sl-chr 



and H. K. Flank. 1921. 

 nrt:!. Black walnut : Its growth and mnnacement. F. S. Baker. 1021. 

 9.'14. Dnmplng-ofT in forest nurseries. Carl Hartley. 1921. 

 On.">. The distilliiitlon of northwestern bo.\ed apples. <'. W. Kitchen, E. M. Selfert, Jr., 



nnd Mary B. H.tII 1921. 

 Ono Wild ducks nnd duck foods of the Bear River Marshes, Utah. Alexander Wet- 

 more. 1921. 

 9.17. Cooiieriillve grain marketing. A rnmpnraflve study of methods in the United 



States nnd In Canada. .1. M. Mehl. 1921. 

 Q'.iH. Effects of nicotine sulphate as an ovicide and birviclde on the c«idllng moth and 



threp other Inserts. N. K. Mclndoo, F. L. Slmanton. If. K. I'lank. nnd R. J. 



Fiske. 1921. 

 O.^.O. The turkev nn important factor In the spread of gapeworms. B. H. R:insom. 



1921. 

 010. The spnroirene.M test as an Index of the contamination of milk. 8. Ilenrv Ayeri 



and I'aul W. Clemmer. 1921. 



041. Farm management in the Ozark region of Missouri. fl. M. Dixon nnd .1. M. 



I'urdotn. 1921. 



042. I'olsonens properllis of thr- whorled mllkweedK, iiHcli<plaH nuinita and A. vertlcllUta 



var. t'l-verl. C. Dwlght Marsh nnd A. B. Clnwsou. 1921. 

 94:?. Cost of producing whiat M It I'oriper riTid It. S. Wns'ihurn. 1921. 

 944. The nh'iibol te:t ns a means tif (leternilnlng <iunllty of milk for rondeiiiieries. A. O. 



Dnhlberi: and FT. 8. Garner. 1921. 

 045. The Influence of rnlcluro and pho.sphorus In the feed on the ml"' vi.i.i ..f .liiirv 



cows. Edward B. MeIgs nnd T. E. Woodward. 1021. 



