516 Genera? Notes. [July, 
Annali del Museo Civico di Storia Naturale di Genova. Vol. xiv, 8vo, 1879. 
From the museum. 
Il Canton Ticino Meridionale ed i Paesi Finitimi Spiegazione del foglio XXIV. 
Tauf. colorita geol. da Spreafico, Negri e Stoppani per Toryuato Taramelli. (Vol. 
xvi Mat. Carta Geol. Della Soizzera.) 4to, 1880. From the author. 
Annales del Museo Nacional de Mexico. Tomo 11, Entrega 1a, 4to, 1880. 
ms 
GENERAL NOTES. 
BOTANY. 
EFFECTS OF UNINTERRUPTED SUNSHINE ON PLANTS,—Professor 
Schiibeler has made a series of observations on the effect pro- 
duced by the almost unbroken sunlight of the short Scandinavian 
summer, on plants raised from foreign seed, z. e., wheat from Bes- 
sarabia and Ohio. The general results are stated by the Journal 
of the Royal Microscopical Society, as follows :— 
1, The grain of wheat that has been grown in low-lying lands, 
may be propagated with success on the high fields, and will reach 
maturity earlier at such elevations, even, although at a lower 
mean temperature. Such grain, after having been raised for sev- 
eral years at the highest elevation, which admits of its cultivation, 
is found, when transferred to its original locality, to ripen earlier 
than the other crops which had ‘not been moved. The same re- 
sult is noticeable in grain that has been transported from a south- 
ern to a more northern locality, and vice versd. f 
2. Seeds imported from a southern locality, when sown within 
the limits compatible with their cultivation, increase in size and 
weight; and these same seeds, when restored from a more north- 
ern locality to their original southern home, gradually diminish 
eir former dimensions. A similar change is observable in 
the leaves and blossoms of various kinds of trees and other plants. 
Further, it is found that plants raised from seed ripened in @ 
northern locality are hardier, as well as larger, than those grown 
in the south, and are better able to resist excessive cold. 
3. The further north we go, within certain fixed limits, the 
more energetic is the development of the pigments in flowers, 
leaves and seeds. Similarly,the aroma or flavor of various plants 
or fruits is augmented in intensity the further north they are car- 
ried within the limits of their capacity for cultivation; and con- 
versely, the quantity of saccharine matter diminishes in proportion 
as the plant is carried further northwar 
DESTRUCTION oF Insects BY Funot.—Prof. Elias Metschnikoff, 
the distinguished Russian Embryologist, has, according to Vature, 
recently investigated this subjéct and has given an explanation of 
the possible value of yeast application more satisfactory than that — 
adopted by Dr. Hagen. e general result of the most accurate 
investigations of the beer-yeast fungus (Saccharomyces cerevisiae) 
