What people are saying - Write a review
We haven't found any reviews in the usual places.
Other editions - View all
animal appears attached base become belong bill bird body branches British brown called cells characters clear closely Cloudy collection colour common considered contained continuous described direction distinct distinguished division dorsal edge examination existence extending external extremity eyes fact figure fine four front genera genus given Gray green head inch individual known larger latter leaves length less lines lobes lower margin marked means middle minute Museum narrow nature nearly observations occur opening organs original plants portion position posterior present probably produced rain referred regard remains remarkable resemblance ridge root rounded rows seen segments separate shell short side similar single slightly species specimens stem structure surface tail terminal tree tubercles upper valve vegetable ventral whole wing
Page 256 - Müsset im Naturbetrachten Immer eins wie alles achten; Nichts ist drinnen, nichts ist draußen: Denn was innen das ist außen. So ergreifet ohne Säumnis Heilig öffentlich Geheimnis. Freuet euch des wahren Scheins, Euch des ernsten Spieles: Kein Lebendiges ist ein Eins, Immer ist's ein Vieles.
Page 190 - how the extinct species have from time to time been replaced by new ones down to the very latest geological period, is the most difficult, and at the same time the most interesting problem in the natural history of the earth...
Page 208 - Rhizopods, by the entanglement and drawing in of minute vegetable particles, through the instrumentality of the pseudopodia ; and that the addition of new zones probably takes place by the extension of the sarcode through the marginal pores, so as to form a complete annulus, thickened at intervals into segments, and narrowed between these into connecting stolons, the shell being probably produced by the calcification of their outer portions. And this view he supports by the results of the examination...
Page 186 - If the law above enunciated be true, it follows that the natural series of affinities will also represent the order in which the several species came into existence, each one having had for its immediate antitype a closely allied species existing at the time of its origin.
Page 188 - Such phenomena as are exhibited by the Galapagos Islands, which contain little groups of plants and animals peculiar to themselves, but most nearly allied to those of South America, have not hitherto received any, even a conjectural explanation.
Page 187 - ... and they often occur in different countries, or are found fossil in different formations. They are said to have an analogy to each other when they are so far removed from their common antitype as to differ in many important points of structure, while they still preserve a family resemblance. We thus see how difficult it is to determine in every case whether a given relation is an analogy or an affinity, for it is evident that as we go back along the parallel or divergent series, towards the common...
Page 207 - ... classification of which there is consequently no safe basis, the author has undertaken a careful study of some of its chief typical forms, in order to elucidate (so far as may be possible) their history as living beings, and to determine the value of the characters which they present to the systematist. In the present memoir, he details the structure of one of the lowest of these types, Orbitolites, with great minuteness ; his object having been, not merely to present the results of his investigations,...
Page 208 - ... and that other bodies, enclosed in firm envelopes, which he has more rarely met with, but which seem to break their way out of the superficial cells, may be ova.
Page 195 - Abortive stamens, rudimentary floral envelopes and undeveloped carpels, are of the most frequent occurrence. To every thoughtful naturalist the question must arise, What are these for ? What have they to do with the great laws of creation ? Do they not teach us something of the system of Nature ? If each species has been created independently, and without any necessary relations with pre-existing species, what do these rudiments, these apparent imperfections mean ? There must be a cause for them...