323 
L., Carex monile Tuckerm., Muhtlenbergia sobolifera Trin., Glyceria 
pallida Trin., Bromus racemosus L., Abies balsamea Mill. Among 
these the species which arouses the greatest suspicion about Hol- 
zer's observations is the Quercus. Sargent avers (Silva of North 
America, 8: 156) that Q. dicifoha “ apparently does not reach cen- 
tral New York, nor cross the Alleghany mountains into the Mis- 
Sissippi basin.” Other plants in Holzer’s list belong to groups such 
that one who did not have access to verified specimens, might 
easily go astray in. In making up the lists peculiar to each of the 
three floras—Monroe Co., Buffalo and Cayuga—the committee 
spared no pains to swell the Monroe Co. list. A considerable per- 
centage of them are plants of recent introduction, some of them 
are given no number in the list. But it would be unfair, perhaps 
uncharitable, to dwell upon the parts of the work in which the com- 
mittee has emphasized the richness of their flora. 
The historical sketches are welcome contributions to our too 
meager knowledge of local botanists. The maps are excellent; 
the sketches of localities are full of interesting matter. The re- 
marks upon forest trees, which always form such a conspicuous 
feature in a flora, make one wish that more information had been 
collected and included. It is certain that Mr. Fuller could have 
put upon record much that those local botanists who succeed him 
would be glad to possess. W. W. Row_Lee. 
The Roentgen Rays and Botany.—It is reasonable to suppose 
that botanists, among other scientists, should devote some atten- 
tion to the influence of Roentgen rays upon vegetable life. So far 
only minor reports have been published owing to the fact that suf- 
ficient time has not yet elapsed for the attainment of reliable re- 
sults. 
Schober* has published the preliminary results of his observa- 
tions on the influence of the Roentgen rays upon the heliotropic 
curvatures of plants. He experimented upon the seedlings of 
Avena sativa. The seed was allowed to germinate in a dark 
chamber after which it was exposed (without being removed from 
the dark chamber) to the Roentgen rays for a period of one-half 
* Schober, Alfred. Ein Versuch mit Réntgen’schen Stra)len auf Keimpflanzen. 
Ber. deutsch, bot. Ges. 14: 108-110, 1896. 
. 
