Transactions of the Botanical Society, Volume 19The Society., 1893 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
A.M. Maximum Abies grandis Abies Lowiana alba annual antipodal April Araucaria average Barometer above Mean branches Christison chromatin Cistern of Barometer Coniferæ conifers conjugation corrected and reduced cotyledons Crataegus Curator Deciduous deciduous trees Difference Distance from Sea East Lothian EDIN Edinburgh embryo-sac endonucleoli exhibited exposed Thermometers feet above grass feet in girth fertilisation flower foliage forest frost girth-increase grandis ground growth half half-season Height of Cistern Hutchison's Hygrometer inches increase July June katabolic leaves Linn Lowest Reading March membrane micropylar mometers for preceding month Monthly Range nuclear nucleolar nucleolus nucleus ovule ovum Perth Pinus plants pollen-grain primordial cell Professor of Botany prothallus protoplasm Quercus Readings of exposed ROBERT LINDSAY rock-garden Royal Botanic Garden S. R. Ther Saxifraga season seed Society species specimens spores sporocyte stem taken at Royal TEMPERATURE AND VEGETATION Tilia tion TRANS vacuole
Popular passages
Page 194 - The alcoholic extract of the leaves on evaporation yields a greenish-brown residue of a specific and somewhat disagreeable odour, more strongly perceptible on boiling the extract with water. This residue is only to a small extent soluble in water, and the solution has an acid reaction. It yields a light yellow precipitate with acetate of lead. The part of the alcoholic extract that is insoluble in water is easily soluble in alkalies. It also dissolves in nitric acid at a moderate heat, whereby oxidation...
Page 428 - ... exhausted cells is connected by the stages of multiple conjugation with the ordinary form of the latter, while the respective differentiation of the two elements effects the transition to fertilisation proper. Historically, then, fertilisation is comparable to mutual digestion, and, though bound up with reproduction, has arisen from a nutritive want.
Page 412 - ... but may vastly outstrip each other at particular times, so it is with the cell of the body. Income too may continuously preponderate, and we increase in wealth, or similarly, in weight, or in anabolism. Conversely, expenditure may predominate, but business may be prosecuted at a loss ; and similarly, we may live on for a while with loss of weight, or in katabolism. This losing game of life is what we call a katabolic habit, tendency, or diathesis; the converse gaining one being, of course, the...
Page 428 - ... or katastates, which stimulate the latter to division. The profound chemical differences, surmised by some, are intelligible as the outcome of the predominant anabolism and katabolism in the two elements. The union of the two sets of products restores the normal balance and rhythm of cellular life.
Page 524 - ... supposed that they soon changed the shelter of their elm for that of seven yew trees growing on the declivity of the hill on the south side of the abbey, all yet standing in the year 1810, except the largest, which was blown down about the middle of the last century. They are of an extraordinary size ; the trunk of one of them is 26 feet 6 inches in circumference at the height of three feet from the ground. Now they stand so near each other as to form a cover almost equal to a thatched roof.
Page 524 - ... drink. Part of the day some spent in making wattles to erect a little oratory, whilst others cleared some ground to make a little garden.
Page 418 - The primitive representative of the male element was at one time " maternal, " through simple fission and a capacity for growth ; it became " paternal " through conjugation. Sexuality was the outcome of the unequal growth of germ-cells of the same species, induced by the self-regulative influences exerted by internal physiological conditions operating under the influence of varying external conditions. The determination of the sex of an embyro has depended in some way upon a tendency, early established...
Page 394 - ... structure of the nucleolus : in the nucleolar membrane " a number of very minute dark radially placed pores or striae can be observed, and . . . these striae are continued into very delicate cilia-like fibrils radiating out from the nucleolar membrane into the nuclear hyaloplasm. . . . The nucleolus is differentiated into an outer zone and an inner zone. The outer zone is less deeply stained, and on careful examination is found to be made up of a circle of peripheral endonucleoli, which are slightly...
Page 192 - ... renders it so repulsive that no animal will touch it. Moreover, as it can scarcely be made to burn, it is useless even for the purpose of fuel. The resinous matter to which the odor is due abounds In all parts of the plant.
Page 12 - Provisional Host- Index of the Fungi of the United States. Part II, Gamopetalce — Afetalcc.