136 Scientific Intelligence. 
science. : Bs 
2. On a function of Roots.—Hewricr (Hennebery’s Journal fir Land- a 
wirthschaft, 1863, p. 280 et. seq.) has made some ingenious and interest 
ing observations on the function of roots in supplying water to the plant 7 
and on the development, under certain conditions, of special roots destined 
for this purpose. It is a matter of not infrequent occurrence that plants 
: Vate to a surprising extent. Henrici surmised 
t the roots which most cultivated plants send down deep into the 
even when the latter is b means porous or inviting, are d 
moist by occasional waterings The 
grew, putting forth new leaves. After the lapse of several weeks, ! 
