388 BOTANICAL GAZETTE [NOVEMBER 
AMBRONN indicates the chemical and physical alterations which the cellulose of 
textile fibers undergoes when impregnated with zinc sulfid. NEsTLER has 
extended MacDoveat’s studies on the skin poison of Cypripedium spectabile 
secreted by the glandular hairs. N&EmEc writes briefly on his experiments upon 
regeneration with the roots of Taraxacum. SrToxk asa declares unequivocally 
that in anaerobic and in aerobic respiration the formation of lactic acid, alcohol, 
and CO, (and in addition acetic and formic acids in aerobic respiration) is due 
solely to enzymes. KAMMERER describes a case of symbiosis between Ocedogonium 
undulatum and aquatic larvae of Aeschna cyanea. GRAF furnishes an appro- 
priate study of the gum-ferment whose action WIESNER first correctly described. 
HEINRICHER adds to his two previous papers on the effect of light upo? 
germination of seeds a general discussion of the subject, with some new expéet- 
ments and a valuable summary. Mrxkoscu finds that the scion of Epiphyllum 
grafted upon Peireskia as a stock, exercises a definite effect in giving rise in its 
cells to the bodies peculiar to Epiphyllum. F1cpor reports exact determinations 
of the phototropic sensitiveness of certain plants in relation to the zone of indiffer- 
ence (which seems not to exist in some). KoorpErs again describes and figures 
his Javanese genus Wiesneromyces. Zikes has a further account of his Ba¢- 
terium polychromicum and its pigment production. VoN WETTSTEIN observed 
a saltatory rise of the fertility (at first small or none) of the pollen in two undoubted 
bastards of Sempervivum, and suggests that here may be an important factor 
the origin of new forms. Von WeINzIRt contributes data on the mechanica 
functions of the various organs of the embryo of cereals in their escape from 
investing structures. K. LINSBAUER reports propagation of the excitation 0 the 
primary petiole of Mimosa at a rate of roo™m-sec, and a reaction time averagi” 8 
0.09 to 0.355, with minimum 0.07 and maximum 0. 80°. Cay 
Fritscu describes cystoliths of Klugia zeylanica. RACIBORSKI recognizes ” 
Coreopsis tinctoria prolifica “‘an undoubted mutation.’ L. LiNsBAUER gives 
an account of “photochemical induction” in the formation of anthocyan in the 
etiolated seedlings of buckwheat. KRasser makes a critical synopsis of the 
lower Lias flora of the Austrian Alps. ScHIFFNER presents an ecological study 
of so-called Knieholzwiesen of the Iser Mountains. WEGSCHNEIDER states os 
the fats are really saponified by stages and the reaction is only apparently ase 
lecular. Skraup writes briefly on the leucin of proteins. STROHMER gre” 
account of the accumulation and migration of saccharose in the sugat cei 
KarzEL shows some interesting peculiarities in the lignification and cutinization 
of the walls of the stomata in cycads. Przrpram notes the renewed growth ~~ 
atumps of red wood, familiar to Californians. W1LHELM figures a remar kable 
distortion of the tips of a fir. Loprrore writes on twin-roots in Zea and kee? 
Besides the papers listed, there are several on more general topics, histor 
or philosophical, that are omitted for lack of space. The volume is 4 
oc and gives evidence of the inspirational force of a great investigator 
