~ . 
cela i Na al i a ls | Ml aia al ell al 
_ from 
Botany and Zoology. 131 
. 
and the yellow ray exerts a repellant influence on the roots, giving the 
wheat a downward and the pea roots a lateral impulse. A few exp 
of wheat and peas in oxygen, hydrogen, and carbonic acid gases, as 
well as in ordinary atmospheric air, and in air from which carbonic acid 
was at all times certain to be removed. ‘The results confirmed former 
observations on the necessity of oxygen. ’ 
Prof. Mituer, in thanking the author for his valuable researches, made 
some remarks on the interesting results that the investigation had 
brought to light; and drew especial attention to the remarkable fact 
stated in the paper, that the blue rays retarded the action of germination 
at first, although they probably accelerated the growth of the plant af- 
terwards,—the act of germination being attended with the absorption 
which was found to be an excellent fertilizer for grasses, had compara- 
tively little influence upon leguminous plants. 
10. Note on the Mastodon (?), and the Elephas primigenius ; by Sir 
Joun Rictarpson.*— Mastodon (2)—At page 102 of the Zoology of 
the fragmentary shoulder-bones found at Swan River. 
The depression in question was most likely designed to afford a firmer 
attachment to the central fasciculz of the infra spinatus muscle; and 
* From a communication made by Sir John Richardson to Dr. John C. Warrem 
whom e above was received for this Journal. 
t Description of the Mastodon giganteus, by John C. Warren, M.D., Boston, 1852, 
