Popular science reader; containing lessons and selections in natural philosophy, botany, and natural history with blackboard drawing and written exercises

 
9781236420770: Popular science reader; containing lessons and selections in natural philosophy, botany, and natural history with blackboard drawing and written exercises
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1881 Excerpt: ... also in regard to the number and arrangement of their veins. Leaf Veins. Veinlets. Veinulets. 146. Veins.--The first leaf above shows its stem or foot-stalk, called its pet'-i-ole (P), from which, at the base of the leaf, spring its veins, five in number. Leaf Veins, Veinlets, etc. 189 147. Veinlets.--The next shows small branches from the veins, called veinlets. 148. At the end of some words, let signifies small; as leaf//?/, a small leaf; islet, a small island; streamlet, a small stream; root/?/, a small root; and ve'mlet, a small vein. 149. Veinulets, Net-veined.--The third shows finer branches from the veinlets, called veinulets. Such a leaf is said to be net-veined. With few exceptions, the leaves of exogens are net-veined. Mid-Veined. Parallel-Veined. Fork Veined. Serrated. 150. Mid-veined.--Leaves having but one large vein, which is the continuation of the petiole (P), and runs from the base (6) of the leaf to the apex (a) through the middle, are called mid-veined. 151. Parallel-veined.--The veinlets which branch from the mid-vein are parallel with each other; the leaves are therefore said to be fQO Leaves--Their Shapes, etc. parallel-veined. The leaves of most endogens are parallel-veined, as those of corn and lilies. 152. Fork-veined.--Leaves whose veins divide and resemble forks are called fork-veined. 153. Serrate.--Leaves having a saw-like edge, the teeth pointing forwards, are called serrated. Serra means saw. 154. A Feather-veined leaf is one in which its veinlets branch off from the mid-vein, thus resembling a feather. Hand-Shaped. Finger-Shaped. Gashed. 155. A Hand-shaped leaf is so called from its resemblance to the palm of the hand and fingers. 156. A Finger-shaped leaf is one whose parts or divisions, called lobes, are more separated fro...

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Other Popular Editions of the Same Title

9781171582496: Popular science reader; containing lessons and selections in natural philosophy, botany, and natural history; with blackboard drawing and written exercises

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ISBN 10:  1171582498 ISBN 13:  9781171582496
Publisher: Nabu Press, 2010
Softcover

9781376830910: Popular Science Reader; Containing Lessons and Selections in Natural Philosophy, Botany, and Natural History; With Blackboard Drawing and Written Exercises

Sagwan..., 2018
Softcover