Transactions and Proceedings of the Botanical Society of Edinburgh, Volume 11Botanical Society, 1873 Proceedings included in all volumes except v. 2-4 (in v. 1 called "Extracts from the minute-book," 1839-43). |
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Common terms and phrases
8vo.-From the Author Algæ alpine apex appearance Ben Lawers Berwickshire Botanical Society botanists Botany British broad Cinchona collection colour cones Conifers containing cultivation Deodar diameter district Edinburgh exhibited experiments feet fibro-vascular bundles FIELD CLUB Field Excursions Flora flowers fluid fossils fungi Geology growing Herbarium Honorary inches India Ipecacuan James John Juncus biglumis leaf leaves Lepidodendron Lepidoptera lithium citrate M'NAB Marginal cells Molluscs moss mountain Museum Natural History Natural History Society NATURALISTS noticed observed papers Philosophical Society Picea plants plates presented President Proceedings Professor Balfour Professor of Botany published quantity rainfall Reports rocks roots round Royal Botanic Garden Sadler season Secretary seeds sent soil species specimens Spores stamens stem Subscription temperature thickened Thuja tion TRANS Transactions transpired trees trigones Tube vegetation Vice-Presidents Weight of Branch Zealand flax
Popular passages
Page 205 - To give a stronger impulse and a more systematic direction to scientific inquiry; to promote the intercourse of those who cultivate science in different parts of the British Empire with one another, and with foreign philosophers ; to obtain a more general attention to the objects of science, and a removal of any disadvantages of a public kind which impede its progress.
Page 262 - Fahr., from the time it begins to grow in spring, for the proper ripening of the seed ; and, moreover, that this heat must be partitioned so as to secure a mean summer temperature of 58° during the development and maturation of the seed. This minimum amount of heat required for the maturing of the...
Page 404 - The part they play in the economy of the organic world is wonderful. The moment a plant gets worsted in the battle of life, becomes delicate from uncongenial soil or other circumstances, or gets smothered by a more vigorous rival, they set upon it and burn it. If we look just now in the Botanic Garden at any of the old summer beds of half-hardy plants, we shall see them shrouded in a maze and network of white fleecy mould. That mould is a fungus finishing the work of extermination which the frost...
Page 404 - Barry that the number of plants in which chlorophyll is absent — that is to say, which have no power of decomposing and recombining the elements of water, carbon dioxide, and ammonia, and which consequently require to have their food presented to them in the form of organic matter — is fully equal to that of green plants, say 1 50,000. These plants are chiefly fungi. The part they play in the economy of the organic world is wonderful. The moment a plant gets worsted in the battle of life, becomes...
Page 404 - Berardthat if fruit be placed to ripen in air or in oxygen gas, a considerable quantity of oxygen is absorbed and an equivalent proportion of carbon dioxide is given off ; that, in fact, a notable quantity of oxygen is burned in a true process of respiration. It is calculated by De Barry that the number of plants in which chlorophyll is absent — that is to say, which have no power of decomposing and recombining the elements of water, carbon dioxide, and ammonia, and which consequently require to...
Page 341 - The plants are then from 3 to 5 feet high, with thick succulent stalks, and the flower-buds just appearing. The collectors proceed over the field, cutting the head of each stalk, and scraping the flow of juice into their vessels — one person cutting being followed by two collecting the juice. This process they repeat six or seven times a day, each time a new cut being made a little lower down the stalk. The period of collection generally lasts from six weeks to two months, closing usually about...
Page 263 - Not only so, but it was found that the wheat crop of 1864 ripened well with only the average temperature of 54'4°. In that year, however, the sunshine was much above the average, and the mean of the daily maximum temperature was high, being as high as in August 1861, when the mean temperature was 57'4°. It is probable that the longer time the sun is above the horizon in Scotland, as compared with Germany and France, renders the ripening of this cereal possible with a lower mean temperature, and...
Page 268 - ... moisture, pass arid and dry, and consequently rain scarcely falls there. From the relation of this part of America to the prevailing winds, and from the contour of its surface, an endless diversity of climate is the result, and especially the middle portion of the vast region extending from Aliaska to Lower California presents more sudden transitions of climate, and climates more sharply contrasted with each other than any other portion of the globe can parallel. Hence this region offers the...
Page 276 - The leaves are green with an eye of white upon them. The flowers are of a fine deep blush color, as all know, with some pale yellow threads in the middle, and are not so thick and double as the White, not being blown with so large and great leaves as the Red, but of the most excellent sweet pleasant scent, far surpassing all other Roses or Flowers, being neither heady nor too strong, nor stuffing or unpleasant sweet, as many other flowers.
Page 263 - ... furnishing the best available key. The rainfall affects plants directly through the nourishment it conveys to them, and indirectly through the state of the sky which its amount or absence implies. Indeed, so great is the influence of rainfall on vegetation that we cannot be far wrong in regarding it as co-ordinate with that of temperature. Whatever the law may be which expresses the atmospheric conditions that determine the limits of the growth of species, it must include in its functions both...