AGRICULTIKAL BOTANY. 451 



fertilizers, representing 96 manufacturers, are reported with a schedule of trade val- 

 ues i 'i fertilizing materials for 1905. 



Analyses of commercial fertilizers, II.. I. Wiiiiim: m \i. {RhodL Island Sta. 

 liul. t08, pp. /.' ). -— "This bulletin contains the results of such analyses of bone, 

 tankage, and of ready-mixed potato fertilizers as have been found on Bale in Rhode 

 [sland during t be Bpring of L905. " 



Analyses of commercial fertilizers (South Carolina Sito. BuU. 110, 111, 112, US, 

 />/>. ; i ach (.—Tabulated analyses of L60 fertilizers. 



Fertilizer analyses, fall season, 1904, to spring- season, 1905, B. \V. Ku- 

 c;oui: ( />"/. N. C. Bd. Agr., ?6 (1905), No. ;. pp. 77). The aames and guaranteed 

 composition of fertilizers registered for L905, and analyses and valuations of 679 sam- 

 ples of commercial fertilizers and 108 samples of cotton-seed meal, examined during 

 the tail of L904 and Bpring of L905, with explanations regarding terms used in fertili 

 ser analyses, freighl rates, valuation, etc. 



Mineral products of the United States, calendar years 1895 to 1904, 

 I ». T. I>ay (U. S. Geol. Survey, 1905, Aug., folio). — The quantity and value of the 

 different products during the years named are given. Among the products of apecial 

 interesl from an agricultural Btandpoinl arc gypsum, of which 940,917 shoii ton.-, 

 worth $2,784,325, were produced in L904; marl, 25,000 short tons, worth $20,000; 

 and phosphate rock, 1,874,428 long tons, worth $6,873,625. 



Working- in Great Britain of the fertilizers and feeding- stuffs act, 1893 

 (Minutes of Eviderce befon Dept. Com. Bd. Agr. and Fisheries [London], 1908, pp. 

 Ill f86).—A detailed reporl of evidence, a summary of which was noted in 

 E. S. R., hi. p. 961. 



AGRICULTURAL BOTANY. 



Report of the botanist, .1. \Y. Blankinship (Montana Sta. Rpt. 1904, PP- 919- 

 2^4). — An account is given of the various lines <>t' investigation carried on by the 

 author during the period covered by this report. A considerable portion of his time 

 was given up to the study and determination of the botanical collections that have 

 been made, and some work was done in collecting, naming, and mounting parasitic 

 plant disease material, with the hope of getting together sufficienl material for a 

 publication on the parasitic diseases of the State. 



A brief accounl is given of a disease of cottonwoods which seem- to be of an 

 infections nature and which attack- the different species of cottonwood -row ing in a 



number Of the largest cities of the State. Tin- same species ill the w ild -tat i' do nol 



seem to hi- affected. The principal symptom of disease is the yellowing of the foli- 

 age accompanied by bleeding from the limbs and trunks, and when cut the wood 

 shows a diseased condition of the t issues e \ tend in:.: do w nward from the points where 



the bleeding takes place. The author- suggests the name "cottonwood yellows" 

 for this disease, and its diagnosis and treatment are to be the Bubjecl of further 

 investigation. 



In cooperation with the horticulturist, collections have been made of a number o\ 

 plants to test their adaptability for ornamental cultivation. Notes are also given on 

 a number of introduced plants that threaten to become troublesome a- weeds, etc 



The physiological effects of Bordeaux mixture, R. Sen indeb t Landw. Jahrb., 

 33 (1904 I, No. 4-5, pp. 517-684; aba. in Jour. Bd. Agr. [London], 12(1905), No. :. 

 />//. 418-416). — After- discussing the effect of copper on plants and the use of Bor- 

 deaux mixture as a fungicide, the author gives an a. •count of an extended Beries of 



experiments to test the effect of Bordeaux mixture upon the hot plant, wholly aside 

 from its action as a fungicide. 



The various theories regarding the supposed stimulating effect of Bordeaux mixture 

 are reviewed, and the author rejects the idea of a stimulating effed acting through 



