84 BOTANICAL GAZETTE 
products of synthesis which are present. The white portions of vari 
leaves absorb much more light than does the chlorophyll alone. 
Reference has been made previously “ to the work of Goldflus who fo 
an amount of synthethic energy in the chlorophyll layer underneath the 
of trees that is surprising in the light of the experiments of Griffon and 
bauer, as noted above.— H. C. COWLEs. 
Ohio Experiaest Station. The smut of the onion is able to ‘penetrate 
young plant only while leaving the seed or very soon thereafter. Asit 
no effect upon the sets, it is perfectly safe to put the latter into an im 
field, if they have been grown in a seed bed free from smut spores. fe 
smut has amounted to 25 to 4o per cent., and even more, 2. é., a 100 
or more bushels of sets per acre. Preliminary experiments go to show 
by sprinkling the seeds, after they are scattered in the rows, withas 
of 1 oz. of 40 per cent. formalin in 2 to 3 gallons of water, until} 
oa Cini the most damage in Ohio are white 
a paucity of the literature « on the subject. It is less amenable to 
: Lemenee from the fact that it is at its maximum almost immediat : 
