A practical course in botany; with especial reference to its bearings on agriculture, economics, and sanitation

by Eliza Frances Andrews

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. 1911 ...56 and 57 how promptly leaves respond to changes in the direction of light, y%r and a little observation (Exp. 74) will confvAWn vince us that they are equally sensitive to-fJAfiF) changes in intensity and periodicity of illu(Hr JOCV Elation. filftiVrtftA z95. Phototropisni---The movement of Sy plants in response to light is called photo lySjSiS tropism--a word that means "turning Fig. 2 31.--A toward or away from light." It includes plant that has been jmcjs 0f light adjustments, and examples growing near an open r window, showing the of it are to be met with everywhere in the 1towaVrd8theaiight!irned disposition of leaves with reference to their light exposure. 196. Horizontal and vertical adjustment.--Take two sprigs, one upright, the other horizontal, from any convenient shrub or tree--and notice the difference in the position of the leaves. Examine their points of attachment and see how this is brought about, whether by a twist of the petiole or of the base of the leaf blades, or by a half twist of the stem between two consecutive leaves, or by some other means. Plate 10.--A mosaic of moonseed leaves, showing adjustment for light exposure. (From Mo. Botanical Garden Rep't.) Observe both branches in their natural position; what part of the leaf is turned upward, the edge or the surface of the blade? Change the position of the two sprigs, placing the vertically growing one horizontal, and the horizontal one vertical. What part of the leaves is turned upward in each? Figs. 232, 233.--Adjustment of leaves to different 232, upright; 233, procumbent. 197. Leaf mosaics.--Trees with horizontal or drooping branches, like the elm and beech, and vines growing along walls or trailing on the ground, generally display their foliage in flat, spre...

106 pages, Paperback

First published August 13, 2015

About the author

A popular Southern writer of the Gilded Age. Her works were published in popular magazines and papers, including the New York World and Godey's Lady's Book.[1] Her longer works included The War-Time Journal of a Georgian Girl (1908) and two botany textbooks.[2]

Eliza Frances Andrews gained fame in three fields: authorship, education, and science. Her passion was writing and she had success both as an essayist and a novelist.[3] Financial troubles forced her to take a teaching career after the deaths of her parents, though she continued to be published. In her retirement she combined two of her interests by writing two textbooks on botany entitled Botany All the Year Round and Practical Botany,[3] the latter of which became popular in Europe and was translated for schools in France.[4] Andrews's published works, notably her Wartime Journal of a Georgia Girl along with her novels and numerous articles, give a glimpse into bitterness, dissatisfaction, and confusion in the post-Civil War South.