[99 and 100]

Circumnutation of Stem Cr Cereus speciosissimus

Cereus??

Fig 107 A B

Same scale: the letterings i which are not struck out to be given─ In A 2 sets of lettering: In B 3 sets of lettering.─ The 2 diagrams on same block to be brought together nearer or side by side.─

on 24th much of bead magnified 38 times.

[100v]

89 700

Chap. E 10

Coniferæ and Graminceæ, have been swept off the decks of vessels near the N. American shore; and Mr. Riley has seen the ground near St. Louis, in Missouri covered with pollen so as to appear as if sprinkled with sulphur; and there was good reason to believe that this had been transported from the pine-forests at least 400 miles to the south. Kerner has seen the snow fields on the higher Alps similarly dusted; and Mr. Blackley found numerous pollen-grains, in one instance 12000, adhering to sticky slides, which were carried sent up as to a height of from 500 to 1000 feet by means of a kite, and then uncovered by a special mechanism. It is remarkable that in these experiments there were on an average [text excised]