. The first book of botany : designed to cultivate the observing powers of children. You know the names ofthe parts of a leaf^ and thetwo following pictures willshow you what to call thedifferent parts of the frame-worTc, Ribs. — The stoutestpieces of the framework thatbegin at the petiole andreach quite across the blade,are called ribs. When thereis but one, as in Fig. 8, it iscalled a midrib. Fig. Veinlets. Vein. -Midrib. of the pupil into the complexities of the subject before thesimpler portions have been sufficiently mastered. 1^0w, the aim of this book is carefully to guard against s
. The first book of botany : designed to cultivate the observing powers of children. You know the names ofthe parts of a leaf^ and thetwo following pictures willshow you what to call thedifferent parts of the frame-worTc, Ribs. — The stoutestpieces of the framework thatbegin at the petiole andreach quite across the blade,are called ribs. When thereis but one, as in Fig. 8, it iscalled a midrib. Fig. Veinlets. Vein. -Midrib. of the pupil into the complexities of the subject before thesimpler portions have been sufficiently mastered. 1^0w, the aim of this book is carefully to guard against sucha result. These first observations are made without referenceto those combinations of characters by which plants are identi-fied as belonging to a particular order, genus, or species. Oneof our aims is to learn the elementary facts so thoroughly and 22 THE FIRST BOOK OF BOTANY. Fig. 9. ..- VeinletB. Yeins.—The branches of the ribs are called ^lets.—The branches of the veins are calledveinlets. EXERCISE y. Feather-veined and JPahnate-veined Leaves. If yon have carefnlly compared a few living leaveswith Figs. 8 and 9, yon know the difference betweenribs and veins. familiarly that we may be prepared to go forward and use themafterward. We first study the parts of plants one after another,on account of what they offer directly to observation. Whenthe characters of leaves,
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1870
