„ method of estimating rate of denudation, [57]

Williams, Mr. Mattieu, on universal atmosphere, [86]

Winchell, Prof. A., on age of the earth, [64]

„ on comets strangers to our system, [17]

„ on denudation of Colorado plateau, [58]

„ on deposition of Palæozoic sediment, [45]

„ on ethereal medium, [87]

„ on meteoric origin of nebulæ, [22]

„ on nebular hypothesis, [69]

„ on the pre-nebular condition of matter, [71]