bE eo 9 
early in the evening; for spate 
leaves of Jaurocera/sus. 
Some. leaves yield the air “ates 
bles immediately, as leaves of pota> 
toe plants; fome in:a tew feconds, 
as malvas; {ome ima few. munutes, 
as walnut trees; fome much tates, 
as leaves of laurocerafus. bo rod 
_ Some-yield the air bubbles. firt 
on the under fide, as almoft® all 
leaves of trees;-fome firft at the 
upper fide, as leaves of /aurocerafus; 
fome on both furfaces at the: fame 
time, as malva: 
: Se esto = jeans ae air bubbles 
Gate as “in a, of - z vine, 
walnut, lime tree; im fomé they 
are, from the very beginning, of a 
very irregular fize, as in ie te 
aa cenitl ri ee 
: | Thefe 
