STATISTICS MISCELLANEOUS. 797 



Some preliminary notes on the hygienic value of various street pave- 

 ments as determined, by hacteriological analyses, S. Bukrage and D. B. Luten 

 {Proc. Lidiana Acad. ScL, 1899, pp. 61-67, Jigs. 7). — Examinations of cultures exposed 

 on an ordinary surveyor's tripod over various kinds of pavements are reported. The 

 conclusion is reached from these observations that " if the amount of dust floating 

 over any given pavement is a measure of the sanitary value, the pavements in ques- 

 tion will take the following rank: Wood, brick, sheet asphalt, and macadam." 



Hydrography of Nicaragua, A. P. Davis {Tireatleth An)i. Rpt. U. S. Geol. Sur- 

 voj. lS9S-!tfl, pp. ,')6.J-0.j'7, j)ls. IJj^figs. 4)- — This paper gives the results of observa- 

 tions made during 1898 in connection with the investigations of the Nicaragua Canal 

 Commission. It deals with general topographic features, rainfall, temperature and 

 relative humidity, evaporation, resources and productions, population, the ship 

 transit problem, and investigations by the Nicaragua Canal Commission, 1898. 



Report of progress of stream measurements for the calendar year 1898, 

 F. H. Newell [TwentieUi Ann. Rpt. U. S .Geol. Survey, 1S9S-99, pA. 4, pp. 1-562, ph. 

 63, figs. 218) . — This is a detailed report of measurements which have been published 

 in previous bulletins of the Survey (E. S. R., 11, p. 1094). 



Influence of vegetation on the water flow of rivers, E. AVollxy ( Ir/Zj-sc/o-. 

 Buyer. Landv\ Hath., 5 {1900), No. 3, ]ip. 3S9-445). 



Mitigation of floods in the Brisbane River, A. C. Gregory ( Queendand 

 Geogr. Jour., v. .svr., 15 {WOO), Xo. 1, pp. 41-54). 



Bearing-testing dynamometer, M. J. Golden {Proc. Tudiana. Acad. Sci., 1899, 

 j>p. 83-85, fig. 1). — A machine used by the author to determine the amount of jiower 

 lost by fricti(jn in different forms of shaft bearings is descril)ed. 



The stave silo, J. H. Grisdale ( Canada Cent. Expt. Farm Bid. 35, pp. 11, figs. S). — 

 Brief directions are given for the construction of a stave silo similar to that described 

 by the New York Cornell Station (E. S. R., 11, p. 294), and of a cheap rectangular 

 silo, with notes on crops for silage and methods of filling a silo. 



A mechanical cotton picker {Sci. Amer., 82 {1900), No. 21, p. 330, fig. 1). — Brief 

 technical description. 



STATISTICS— MISCELLANEOUS. 



Eleventh Annual Report of Delaware Station, 1899 {Delcnvare Sta. Rpd. 

 1899, pp. :J01). — This includes a iinancial statement for the fiscal year ended June 

 30, 1899, the organization list of the station, summarized and detailed reports of the 

 work of the different departments during the year, a number of articles abstracted 

 elsewhere, and reprints of Bulletins 42, 44-46 of the station on the following sub- 

 jects: The European and Jajianese chestnuts in the eastern United States (E. S. R., 

 10, p. 962), sorghum in 1899 (E. S. R., 11, p. 141), the root pruning of young fruit 

 trees (E. S. R., 11, p. 845), the southern or cowpea in Delaware (E. S. R., 12, p. 435), 

 dairy value of jiea-vine silage compared with that of June pasture (E.S.R., 12, p. 481). 



Thirteenth Annual Report of New York Cornell Station, 1900 {Xew York 

 Cornell R] it. 1900, pjp. XL— 562). — The report premier incl udes the organization list 

 of the station and V^rief reports on the work and expenditures of the station by the 

 director, treasurer, and heads of departments. The report of the assistant professor 

 of dairy liusl)andry and animal industry gives in addition a statement of conditions 

 governing butter tests of thoroughbred c-ows made by the station and directions for 

 station representatives in conducting official tests of dairy cows. Appendix I con- 

 tains reprints of Bulletins 171-182 of the station on the following subjects: Concern- 

 ing patents on gravity or dilution separators (E. S. R., 11, p. 389), the cherry fruit 

 fly — a new cherry pest (E. S. R., 11, p. 866), the relation of food to milk fat (E. S. 

 R., 11, p. 1081), the problem of impoverished lands (E. S. R., 11, p. 1022), fourth 

 report on Jajaanese plums (E. S. R., 11, p. 1045), the peach-tree borer (E. S. R., 12, 

 p. 63), spraying notes (E. S. R., 12, p. 163), the invasion of the udder by bacteria 



