3° 8 The Botanical Gazette. [November, 



periments in aggregation of Drosera-protoplasm which have 

 become classic, and notes the more recent results of Elfving 

 and Wortmann who find that the protoplasmic layer is thicker 

 on the under side of cells in a negatively geotropic fzeno- 

 tropic) organ. K 



It is impossible to dismiss so carefully prepared and im- 

 portant a paper as this of Fayod with a shrug of the should- 

 ers, as has been done, the author observes, with his earlier 

 notes on the matter. Especially in view of the recent ad- 

 vances in karyokinesis study, as indicated in the researches 

 ot VVatase, Guignard, Carnoy, Zacharias, Pfitzer, Strasburger 

 anc others, it is evident the older emulsion-theory of pro- 

 toplasm is beset with grave difficulties. It is probable that even 

 so admirable a work as Berthold's Studien uber Protoplasma- 

 mechamk does not say the last word upon its subject-matter, 

 fayods paper is an original and valuable contribution to the 

 most fundamental question of both plant and animal physi- 

 ology.— Conway MAcMiLr.AV 



The relations of the phloem. 



n, W fiK lm a feW years our kn °wledge of the phloem region of 

 the hbro-yascular bundles has been greatly extended. Not 

 to go so far back as 1885, in which year appeared He'rail's 



Etude de la tige des Dicotyledons 1 in which the phloem re- 

 ceived extensive consideration, we have last year Lamounette's 

 extensive researches into the origin of the internal liber 

 iXZ'^l u bicollater al " bundles.* Lamounette rejects 

 olich l ^ OH f eraI " as did Herail > *ho considered it ap- 



fnternLl 1 y ° thC Cucurb ^acea,. In this terminology the 

 al nhl P em u Vasl °° ked L, P° n as coordinate with the exter- 

 searche, a m: ^ accordin g to Lamounette (whose re- 



touch cLT ee generall y ^th those of Herail where they 

 from the nT" g £ Und) the internaI P hl ^m is not developed 

 " I? ' U V Vhich produces the bundle, but arises 



-m-Th these t P ?. rench y™- !t is not alwa X s eas y to distin " 

 -us he m^lr^r ' *""& » m ° St CaSGS this ^ ^ ** 

 the first toSr£fif!3 anSe , S kter than thG X ^ lem ' S ° f, f 



internal limits of th* an " U ' ar Vessels come to indkate the 



_ __ ^J^theprocambium before the internal phloem 



\ izT 5 E Nat - Bot v ^r^ " 



