No. 3, April, 1921] UNCLASSIFIED PUBLICATIONS 331 



2257. WoLLEY-DoD, A. H. On collecting loses. Jour. Botany 58: 23-24. 1920.— It is sug- 

 gested that more attention be given to collecting roses in the reddened-fruit stage, as in 

 that condition British roses, at least, are most satisfactorily identified. — K. M. Wiegand. 



2258. WoLLET-DoD, A. H. A revised arrangement of British roses. Jour. Botany 58: 

 Suppl. 1-20. 1920. — The author discusses the present status of the rose question, stating that 

 by the proper treatment of varieties a working classification can be arranged. The work of 

 Dfis^GLiSE is found to be very unsatisfactory, many of the forms having been based on single 

 specimens. A tabular synopsis of the British roses is given consisting of five sections and 

 many subsections, groups, secondary groups, and subgroups. The species under each are 

 considered at length with synonymy and notes. Many varieties and some forms are recog- 

 nized under most of the species. — K. M. Wiegand. 



2259. Zimmerman, Walther. Meitteilungen zur Orchiaceras-Gruppe aus Baden. [Con- 

 tributions on the Orchiaceras group from Baden.) Mitteil. Badischen Landesver. Naturk. u. 

 Naturschutz Freiburg im Breizgau N. S. 1: 21-31. 1919. — A study of hybrids occurring in 

 nature between species of Orchis and Aceras. The following new hybrids are named and 

 described with the probable parents indicated in parentheses: Orchiaceras spuria Cam. forma 

 Neumannii {Orchiaceras spuria X Aceras anthropophorum) , 0. macra Cam. forma rhenana 

 {Orchis purpureus X Aceras anthropophorum) and 0. macra Cam. iorma, freihurgensis {Orchis 

 purpureus X Aceras anthropophorum or Orchiaceras macra X Orchis purpureusf). The various 

 hybrids and their parents are illustrated. — E. B. Payson. 



MISCELLANEOUS, UNCLASSIFIED PUBLICATIONS 



B. E. Livingston, Editor 

 Sam F. Trelease, Assistant Editor 



2260. Anonymous . 'Something about artificial silk. Sci. Amer. Monthly 1 : 516-517. 

 1920. [From American Silk Journal, April, 1920.]— Artificial silk is spun from a thick, viscous 

 liquid, called viscose, which is prepared from wood. Article considers the present production 

 and possible sources of future supply of this commercial product. — Chas. H. Otis. 



2261. Anonymous. Voices of trees. Brooklyn Bot. Card. Rec. 9: 103-105. July, 1920.— 

 Observations of Mr. John Grimshaw Wilkinson, the blind botanist of Leeds, as given by 

 Prof. W. H. Bragg in lecture on "Sounds" at the Royal Institution. Reported in London 

 Times, Jan. 8, 1920. During rain, the most silent tree is Pinus sylvestris, the noisiest are 

 oaks. — C. S. Gager. 



2262. Dasen, a. H. EUaboracion a domicilio de vinagre de platano. [Home vinegar 

 making from plantains.] Rev. Agric. Com. y Trab. [Cuba] 3 : 253-254. 1920.— Translated 

 and slightly modified by A. Brambila, from Bull. Agric. Soc. Trinidad and Tobago 20. Feb., 

 1920.— i^. M. Blodgett. 



2263. Durrell, L. W. Tongs for handling disinfected seed. Phytopath. 9:581-582. 

 1 fig. 1919. — A description of tongs for removing seed from test tubes. — J. G. Dickson. 



2264. Lapicque et Brocq-Rousseu. Les algues marines comme aliment de travail pour 

 le cheval. [The marine algae as food for horses.] Compt. Rend. Acad. Sci. Paris 170: 1601- 

 1603. 1920. 



2265. Pantanelli, E. Uso del cipoUaccio per I'alimentazione e la produzione di alcool. 

 [The use of Muscari comosum Mill, for food and for alcohol production.] Staz. Sper. Agrarie 

 Ital. 53 : 101-112. 1920.— The bulbs of Muscari comosum Mill, as well as of Hyacinthus ciliatus 

 Cir. were found to be very nutritious and well adapted to alcoholic fermentation after a 

 previous treatment with dilute acid, to hydrolyse the polysaccharides, and subsequent neu- 

 tralization with calcium carbonate. The alcohol production of Muscari was found to be 10.5 

 per cent, while Hyacinthus yielded 8.4 per cent of the fresh bulb substance.— A. Bonazzi. 



