TY - JOUR
AU1 - Davies, E. H.
AB -  some of our readers have devised even better experiments for this particular demonstration. If so, we shall be glad to have brief notes together with diagrams for publication. Leaves. The following experiment, which I have used for showing that the external coating of a leaf must be pierced by openings, may be of interest to some of your readers. The apparatus is shown in the accompanying figure. The leaf (A), which must be quite undamaged, is sealed by its petiole into a piece of glass tubing (C) drawn out to a fairly fine point and dipping into water (D) contained in the flask. Through the two-holed rubber stopper (B) passes the tube (C), and a second piece of tubing (H) bent at right angles, fitted with a piece of rubber tubing (G) and clip (F). On exhausting the air above the water, a stream of bubbles rises from the end of the tube C to the surface of the water. By continuing the process of exhaustion, the stream of bubbles may be produced indefinitely, and hence, since all the joints of the apparatus are air-tight, the experiment shows that there must be openings in the surface of the 
TI - DEMONSTRATION OF STOMATA IN LEAVES
JF - School Science and Mathematics
DO - 10.1111/j.1949-8594.1907.tb04617.x
DA - 1907-11-01
UR - https://www.deepdyve.com/lp/wiley/demonstration-of-stomata-in-leaves-Jt3dkaFFlr
SP - 686
VL - 7
IS - 8
DP - DeepDyve
ER -