278 Scientific Intelligence. 
but on that occasion the air was more obscured than at this time, so much 
so that people had to use lanterns along the streets in Quito, at midday. 
ednesday.—Still doubts about the origin of the ashes; more proba- 
bly they are from Cotopaxi. 
5. Paleotrochis of Emmons.—This supposed fossil coral, described by 
Prof. Emmons in volume xxii, p. 389 of this Journal, is regarded by Prof. 
James Hall, after an examination of many specimens, as nothing but 
concretions in quartz rock. 
Il. BOTANY AND ZOOLOGY. 
1. Origin of the Embryo in Planis—The Development of the Ovule of 
Santalum album; with some Remarks on the Phenomena of Impregna- 
tion in Plants generally ; by Arruur Henrrey, F.RS., ete—This is 4 
per in the Linnean Transactions, vol. xxii, and was read before the 
innzan Society of London a year ago, before the publication of Dr. 
Radlkofer’s memoir, which we gave some account of in the November num- 
ber of this Journal. The results of these two contributions to embryology 
n correspond in their main features, although expressed in a some- 
what different way; and they close a long and lively controversy, gi g 
coup de grace “theory of the pollinists,” as we already stated 
of the embryo, to exist antecedent to impregnation, i. e. before the arrival 
of the pollen-tube; that the latter, (contrary to what Griffith supposed) 
does not penetrate the embryo-sac, but becomes firmly adherent to its sur- 
becomes a real cell, only as the result of impregnation, and fe 
adhesion of the pollen-tube with the embryo-sac. e closing paragra 
of the memoir, which is dated Jan. 30, 1856, embodies the view ‘bed 
arri 
pollen-tube without becomes abortive, while the other developes into the suspensor 
of the embryo. ; 
