500 EXPERIMENT STATION RECORD. 



AiKtllicr scries ol' cxi)eiiiuents was conducted by iii(»culiitiiif;- n miin- 

 hvv oi" species of lej^juines with bacteria from the tiibeicles ol" Pisum 

 and h'ohinia. The species so inocuUited were: Ornitkopus satiru.s, iSar- 

 thammis scoparius, Cytisns laburnum, Ulex europwns, Lupinns li(teus, 

 L. (U((/ustifolhis, AnthyUis rulneraria, Trifolium pratensc, T. incar- 

 naliim, .IMilofns alha, Meclica(/o .mtiva, M. hipvUna, Lotus coniiciihifHs, 

 Rohinia pnemlacacia, Colutea (irhorcscens, Vicia faba, Y. rillosa, V. 

 Iiirsuta, Lens csculenta, Phaseolus vulgaris, and P. multijiorus. The 

 species of Vicia, Lens, and Phaseolus developed a great many normal 

 tubercles when inoculated with Pisum bacteria, while on Trifolium 

 inmrnatum and Robinia psetidacavia only a few scattered tubercles 

 were formed when similarly treated. The other species were wholly 

 unafl'ccted. Of those inoculated with Robinia bacteria only Robiuia 

 j^ave a good development of tubercles. The species of Phaseolus bore 

 numerous but small tubercles and Trifolium pratense had a few scat- 

 tered ones. All others showed an entire absence of tubercles. 



After investigating the organisms present in all the cases coming 

 under the authors' observation they conclude that the bacteria present 

 in all the tubercles, even those of the Mimosecv are of the species 

 hacillusrailicicola of Beyerinck; that tliej^ are more or less modilied l)y 

 the host on which the tubercles are grown, and tliat the especially 

 modified forms are more capable of causing tubercles to develop on 

 plants of the same or nearly allied genera than on others. They think 

 the dirterences between the forms not sufficiently differentiated to be 

 entitled to specific rank. 



In i)ractical application of inoculation by means of soil the above facts 

 should be borne in mind and selections made from fields where crops 

 hii\ (' been grown similar to the one desired. 



Cell membrane of fmigi, E. (Jilson {La lieviie " La CfUiile,"' 11, pp. 7-h~>; ah.s. nt 

 Clieni. C.iilhL, 1SU4, J I, Xo. 21, p. 874). 



On the ascent of sap. H. H. Dixox and J. Joi.v (Ann. /.■<*/., IS {/S94), Xo. .1?, 

 pp. 4Gs-47(i). 



Secretions and their formation, A. Tschirch (/>'o/. CenthL, Gii {1S94), Xo. 10, 

 pp. :.>S'J-29.3). 



Protoplasm and nucleus, J. Pkrkz {Mem. Sor. Sri. I'hi/K. <t Xat. Honleaiix, ner. 

 4. 4 ( IS9I), Xo. ,?, pp. J77-.'iO.'>). 



The function of awns on an ear of barley (J iis. in Fiihliiui's hnidw. Ztij., 43 

 {1S94), Xo. £.1, p. 74'>). — TIk^ writer cites an experiment in which cutting otJ' the awns 

 (ir hearils (Iccreased the ainount of water transpired. 



The nettle hairs of parsnips. .1. HLAXtiiAiiD {Ilev. Hort., i;t! {1S94), Xo. IS, pp. 

 4. '7, 42S).—\ discnssion of the i>li.vsio]oj,^ieal action of this character, which is fonud 

 on J'asiinara satira, V. opaca, and P. urena, hnt more on the last. The liairs are irri- 

 tating to animals as well as to man, and produce an annoying and painful skin 

 erni)tion. It is reconmieudcd that if parsnip tops he fed to stock care should l>e 

 taken tliat they are still fresh and nn withered. 



On the traumatropic curvature of roots, V. M. Spauldixg {Ann. Boi., S {1S94), 

 Xo. 3.', pp. 423-451, j)7. i).— Phenomena observed to follow the infliction of -wounds 

 npon the toji of growing roots. Experiments with Lupinas albiiH, ricia faba, Pisum 

 satinnn, L'iriinis rominiinis, Zea mays, aerial roots of VitisyoiujyUdes, and JB</i«;i«w8pp. 



