The Elements of Botany, Structural, Physiological, & Medical: Being a 6th Ed. of the Outline of the First Principles of Botany, with a Sketch of the Artificial Methods of Classification, and a Glossary of Technical TermsBradbury & Evans, 1849 - 142 páginas |
Dentro del libro
Resultados 1-5 de 20
Página vi
... light , and puts it forth with no higher pre- tensions . It is for those who , having already mastered the rudiments as taught in the " School Botany , " desire to advance another and a greater step , and to add to their incipient know ...
... light , and puts it forth with no higher pre- tensions . It is for those who , having already mastered the rudiments as taught in the " School Botany , " desire to advance another and a greater step , and to add to their incipient know ...
Página 1
... light upon their skin , and form starch at some period of their lives . Animals , on the contrary , seem never to form starch . 5. Like the simplest animals , the simplest plants are vesicles , or vesicular threads ; and the most ...
... light upon their skin , and form starch at some period of their lives . Animals , on the contrary , seem never to form starch . 5. Like the simplest animals , the simplest plants are vesicles , or vesicular threads ; and the most ...
Página 2
... light , heat , and similar external forces . 13. Its hygrometrical quality causes it to absorb water greedily when presented to it , an essential condition of vegetable life . 14. Its vitality keeps all these qualities in play , enables ...
... light , heat , and similar external forces . 13. Its hygrometrical quality causes it to absorb water greedily when presented to it , an essential condition of vegetable life . 14. Its vitality keeps all these qualities in play , enables ...
Página 6
... light to pass the most freely through it , whence arises the appearance of one circle within another . In some cases the disks intervene between threads of an irregular spire 27 a , and in others they are widened in the form of fissures ...
... light to pass the most freely through it , whence arises the appearance of one circle within another . In some cases the disks intervene between threads of an irregular spire 27 a , and in others they are widened in the form of fissures ...
Página 15
... ; b crystals ; e starch - grains .-- Schleiden . Fig . 60. - a b Cell of a potato containing starch ; e starch - grains apart ; def wheat starch in different positions . paratively rare in parts near the light , and most.
... ; b crystals ; e starch - grains .-- Schleiden . Fig . 60. - a b Cell of a potato containing starch ; e starch - grains apart ; def wheat starch in different positions . paratively rare in parts near the light , and most.
Otras ediciones - Ver todas
Términos y frases comunes
acid Acrogens Algals anther antheridia apex appearance applied arranged axil axis bark base belonging body Botany bracts branches buds bulb called calyx carpels cavity cells cellular tissue centre chalaza colour Composites consisting containing corolla cotyledons cytoblast dehiscence disk dissepiments distinct embryo epidermis Exogens Ferns filament fleshy floral envelopes florets flower-buds flowers fluid foramen formed fruit Fungals Grasses Greek compounds growing point hairs hilum hymenium hypogynous indusium inflorescence integument interior involucre kind layer leaf leaf-bud leaflets leaves Lichens lobes margin matter medullary membranous nucleus Orchids organs ovary ovule parenchyma peduncle pericarp perithecium petals petiole pinnated pistil pith placenta plants pollen pollen-tube produced radicle receptacle resembling root round scales seed sepals separate sides skin sometimes species spiral vessels spore-case spores stalk stamens stem stigma stipe stipules stomates style surface term terminal thallus tubes Umbellifers Urn-mosses usually vegetable veins whorl woody tissue yellow
Pasajes populares
Página vii - Theory and Practice of Horticulture ; or, an Attempt to explain the principal Operations of Gardening upon Physiological Grounds: Being the Second Edition of the Theory of Horticulture, much enlarged ; with 98 Woodcuts.
Página 50 - The potato plant contains more potash before blossoming than after it. The acids found in the different families of plants are of various kinds ; it cannot be supposed that their presence and peculiarities are the result of accident. The fumaric and oxalic acids in the liverwort, the kinovic acid in the China nova, the rocellic acid in the Rocella tinctoria, the tartaric acid in grapes, and the numerous other organic acids, must serve some end in vegetable life. But if these acids constantly...
Página lxi - Placed on opposite sides of some other body or thing and on the same plane. Thus, when leaves are opposite, they are on opposite sides of the stem; when petals are opposite, they aro on opposite sides of the flower ; and so on.
Página lxxiv - Quincuncial; when the pieces are five in number, of which two are exterior, two interior, and the fifth covers the interior with one margin, and has its other margin covered by the exterior, as in EOSÜ 4.
Página 62 - And further, the flowers being abortive branches, whatever the laws are of the arrangement of branches with respect to each other, the same will be the laws of the arrangement of flowers with respect to each other.
Página 83 - A CARPEL is formed by a folded leaf, the upper surface of which is turned inwards, the lower outwards; and within which are developed one or a greater number of buds, which are the mules.
Página lxvi - Ringent, or personate (ringens, personatus) ; a term applied to a monopetalous corolla, the limb of which is unequally divided ; the upper division, or lip, being arched ; the lower prominent, and pressed against it, so that when compressed, the whole resembles the mouth of a gaping animal ; us the corolla of Antirrhinum.
Página 50 - ... follows that the quantity of the bases united with them cannot vary, and for this reason the latter substances ought to be considered with the strictest attention both by the agriculturist and physiologist. We have no reason to believe that a plant in a condition of free and unimpeded growth produces more of its peculiar acids than it requires for its own existence ; hence, a plant, on whatever soil it grows, must contain an invariable quantity of alkaline bases.
Página 68 - If the floral envelopes are/ of such a nature that it is not obvious whether they consist of both calyx and corolla, or of calyx only, they receive the name of perianthium or 330.
Página 77 - The stamens follow the same laws of successive developement as leaves ; and, consequently, if their arrangement be normal, they will be either equal in number to the petals, and alternate with them, or, if more numerous, some regular multiple of the petals.