An Introduction to Botany |
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Page vii
... causes of errors that are now exploded , and the insufficiency of the arguments by which doubtful theories are still defended , - in fine , to draw a distinct line between what is certain and what is doubtful , -are some of the objects ...
... causes of errors that are now exploded , and the insufficiency of the arguments by which doubtful theories are still defended , - in fine , to draw a distinct line between what is certain and what is doubtful , -are some of the objects ...
Page x
... causes of the characters of vegetation being determined , as they surely are , by climate . Finally , the work is concluded by an exposition of what is called MORPHOLOGY ; a subject which is in the vegetable what Comparative Anatomy is ...
... causes of the characters of vegetation being determined , as they surely are , by climate . Finally , the work is concluded by an exposition of what is called MORPHOLOGY ; a subject which is in the vegetable what Comparative Anatomy is ...
Page 3
... and in all cases colourless : when it appears otherwise , its colour is always caused by matter contained within it . If a thin slice of the pith of elder , B 2 CHAP . I. OF THE ELEMENTARY ORGANS . Of the Elementary Organs.
... and in all cases colourless : when it appears otherwise , its colour is always caused by matter contained within it . If a thin slice of the pith of elder , B 2 CHAP . I. OF THE ELEMENTARY ORGANS . Of the Elementary Organs.
Page 4
... caused by the cohesion of their sides , as may be easily proved by boiling the pith a short time , when the cellules readily separate from each other . In pulpy fruits , or in those which have their cellular tissue in a loose , dry ...
... caused by the cohesion of their sides , as may be easily proved by boiling the pith a short time , when the cellules readily separate from each other . In pulpy fruits , or in those which have their cellular tissue in a loose , dry ...
Page 6
... if , indeed , it were not rather said to be an untenable one . No one has ever seen the granules passing through the sides of the cellules ; no rupture of the sides of the cellules , caused by 6 BOOK I. ORGANOGRAPHY . Calyx.
... if , indeed , it were not rather said to be an untenable one . No one has ever seen the granules passing through the sides of the cellules ; no rupture of the sides of the cellules , caused by 6 BOOK I. ORGANOGRAPHY . Calyx.
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Common terms and phrases
acid Adolphe Brongniart albumen anther apex appearance appendages arrangement axis bark base become body botanists bractea branches Brown buds called calyx Cand Candolle carpella cavity cells cellular tissue cellules centre chalaza characters Class colour common Compositæ compound considered consists corolla cotyledons cuticle dehiscence developed dicotyledons direction disk dissepiments distinct distinguished ducts earth elongated embryo exist extremely filament fleshy flowers fluid fructification fruit genera genus granules hairs hilum indehiscent inflorescence integuments kind latter leaf leaflets leaves Linnæus lobes margin medullary rays membrane Mirb Mirbel modifications monocotyledons nature observed organs ovarium ovula ovulum oxygen parenchyma peculiar pericarpium petals petiole pistillum pith placenta plants Plate plumula pollen produced racters radicle receptacle remarkable roots seed sepals separate side sometimes species spiral vessels sporules stamens stem stigma stomata structure substance surface term terminating testa tree tube valves vascular vegetation veins wood woody fibre
Popular passages
Page 6 - Thysanotus fasciçularii, the flowers of which are of a deep brilliant violet, with a remarkably satiny lustre, that appearance will be found to arise from each particular cell containing a single drop of...
Page 217 - ... in its substance, and of evaporating pores on its surface, enables the crude fluid sent from the roots to be elaborated and digested until it becomes the peculiar secretion of the species; the contraction of a branch and its leaves forms a flower ; the disintegration of the internal tissue of a petal forms an anther; the folding inwards of a leaf is sufficient to constitute a...
Page 525 - ... verging to green. Again, the ranunculus, which is originally of an intense yellow, sports into scarlet, red, purple, and almost any colour but blue. White flowers, which have a tendency to produce red, will never sport to blue, although they will to yellow ; the rose, for example, and chrysanthemums. It is also probable that white flowers with a tendency to produce blue, will not vary to yellow.