LIST AND CONTENTS OF BULLETINS 1 TO 100. 25 



dates; the ordinary dates of connnerce ; varieties of dates that should be 

 secured for trial in the United States; introduction of Saharaii varieties of 

 date pahns into the United State^ — The date pahn as a shelter for other fruit 

 trees — Irrig-ation of the date palm: Amount of water necessary for a date 

 palm; warm irrijiation water advantao-eous — Braiuaf^e for the date ])alm— 

 Etfects of atmos])herie humidity and rain on the date pahn: Kaiuy weather 

 disastrous to the flowers and ripeninf? fruits of the date palm — Sunshine 

 necessary for the date palm — Heat requirements of the date i)alm : Resistance 

 of the date jiahn to cold in winter; the date ]mlm flowers late in spring and 

 escapes injury by late frosts; draiiuifie of cold air and inversion of temj)era- 

 ture in relation to date culture; hot summers necessary for the ^late palm; 

 amount of heat required to mature the date — Etfects of wind on the date 

 palm — Resistance of the date i)alm to alkali: Investigation of the alkali- 

 resisting- power of the date ])alm in the Sahara; alkali conditions in relation 

 to date" culture at Biskra. Algeria; alkali conditions in relation to date 

 culture at Fougala, Algeria; alkali conditions in relation to date culture at 

 Chegga, Algeria; alkali conditions in relation to date culture at M'raier, 

 Algeria; alkali conditions in relation to date culture at Ourlana, Algeria; 

 ])re\ ions and subsequent analyses of alkaline soils from the S.ahara ; drainage 

 water from alkaline soils used to irrigate date palms in the Sahara; alkali 

 conditions in relation to date culture in the Salt River Valley, Arizona; 

 alkali conditions in i-elation to date culture in the Salton P.asin, California; 

 geogra])hy and geology of the Salton Rasin ; water supply of the Salton R.asin ; 

 soil conditions in the Salton Rasin ; alkali conditions at I'alm Canyon in the 

 foothills bordering the Salton Rasin; chemical comjiosition of the a-lkali of 

 the Salton ISasin ; fertility of the soils of the Salton Rasin; subsidiary cid- 

 tures to follow in connection with date plantations on alkaline soils; limits of 

 alkali resistance of the date palm; resistance of the date palm to chlorids ; 

 resistance of the date palm to sulphates ; resistance of the date palm to car- 

 bonates (black alkali) — Regions in the XTnited States where date culture can 

 succeed: California; Salton Rasin or Colorado Desert; Death Valley; Colo- 

 rado River Valley; plateau region; interior valley region; coast region of 

 southern California ; Nevada ; Arizona ; Salt River Valley ; Colorado River 

 Valley ; New ^Mexico ; Texas — No danger from Mexican comjjetition in date 

 culture — Profits of date cidture : Extent of the market — Imi)ortance of life- 

 history investigations in demonstrating the feasibility of date culture — Sum- 

 mary — Description of plates — Index. 



No. 54. Persian Gulf Dates and Their Introdnction into America. 



By David G. Fairchild, Agricultural Explorer. 1903. 32 



pp., -1 pis. Price, 10 cents. 



Contents : Introduction — General description of the region — Climate — Lo- 

 cation of the date gardens — Soil conditions — Irrigation of the plantations — 

 Secondary cultures between the palms — Treatment of the soil and ])lanting 

 of yonng palms — Pollination — Different varieties of the region : Bagdad varie- 

 ties ; Kustawi ; Ascherasi ; Bedraihe ; IMaktum ; Burni ; Zehedi ; Barban ; 

 Sukeri ; Taberzal ; ^lirhage ; Bassorah varieties ; Berhi ; Hevezi ; Sayer (or 

 Ustaamran) ; Halawi ; Khadrawi ; Hassa varieties; Khalasa (or Khalasi) ; 

 Jask varieties ; Bunder Abbas varieties ; ^Maskat varieties ; Fard ; Burni ; 

 Nagal ; Mubsali ; Khanezi ; Khassab ; Hellali ; Guadnr varieties — Diseases 

 and pests — Cost and profits of date cidture — Packing and shipment of dates — 

 The date as a food — Description of plates. 



N. 55. The Dry-Rot of Potatoes Due to Fusarium Oxysporum. By 



Erwin F. Smith and Deane B. Swino-le, Laboratory of 



Plant Pathology. 1904. 64 pp., 8 pis., 2 figs. Price, 10 



cents. 



Contents : Introduction — Effect of the disease on the plants — Effect of dif- 

 ferent fertilizers on resistance to the disease — Description of the fungus : 

 Myceliinu ; ^licroconidia : Macroconidia ; Chlamydospores ; Sclerotia ; growth 

 in different media : growth in alkalis; growth in acids; growth in the absence 

 of free oxygen ; reaction to sunlight ; range of temperature for growth ; name 

 of the fungus — Geographical distribution of the. disease — Remedial measures — 

 Culture media used — Summary — Literature — Description of plates. 



101 



