skip to content

Darwin Correspondence Project

Search: contains ""

400 Bad Request

Bad Request

Your browser sent a request that this server could not understand.


Apache Server at dcp-public.lib.cam.ac.uk Port 443
Search:
in keywords
8 Items

6430_10256

Summary

From Sven Nilsson to J. D. Hookerf1   25 October 1868Lund (Suède)25 Okt. 1868.Monsieur le Professeur! J’ai écrit à deux de mes amis qui ont des connaissances personnelles à la Lapponie, pour avoir les…

Matches: 1 hits

  • … Lapland Scientific physical ‘external’ characters fauna geographical …

Darwin’s study of the Cirripedia

Summary

Darwin’s work on barnacles, conducted between 1846 and 1854, has long posed problems for historians. Coming between his transmutation notebooks and the Origin of species, it has frequently been interpreted as a digression from Darwin’s species work. Yet…

Matches: 19 hits

  • … Whereas for many naturalists homology represented structural resemblances among forms arising from a …
  • … and these establish higher taxonomic affinities, (2) characters shared by organisms reflect the …
  • … This at once nearly explains the gradual loss of embryonic characters; & with shortening time of …
  • … is, the comparison of adult forms—led him to regard the characters of the mature cirripede as more …
  • … their community of descent. Since cirripedes exhibited characters common to two different crustacean …
  • … methodology. Relying upon the superficially distinctive characters of Alcippe —its boring powers …
  • … there were three pairs of cirri. But it also exhibited some structural similarities to certain …
  • … assumption that ‘the female Alcippe had partially assumed characters confined to the males of the …
  • … and the assumption that larvae reveal the most general characters of a group; it also indicates how …
  • … division of equal value; but as it may be inferred from the characters of the prehensile antennæ, …
  • … of physiological labour as a means for the development of structural specialisation and with Darwin …
  • … The hermaphroditism of cirripedes is one of the major characters distinguishing the majority of the …
  • … in the different species is fitted for offering specific characters,—absolutely invariable in form …
  • … the group as molluscs and had relied primarily upon external characters alone in their descriptions, …
  • … he provided a thorough description of the anatomical characters of the soft parts of cirripedes. His …
  • … end of its peduncle, and in many cases afford important characters for zoological discrimination.    …
  • … founded on a careful examination, not only of the external characters, but of the internal structure …
  • … systematists by appearing to unite in one organism disparate characters from different …
  • … for example, CD stated: ‘The cause of the greater value of characters, drawn from the early stages …

Living and fossil cirripedia

Summary

Darwin published four volumes on barnacles, the crustacean sub-class Cirripedia, between 1851 and 1854, two on living species and two on fossil species. Written for a specialist audience, they are among the most challenging and least read of Darwin’s works…

Matches: 7 hits

  • … few wretched lines indicating only a few prominent external characters. ’ This ‘ tirade’ was …
  • … there, would make his own collection available . Characters and homologies: seeing what lies …
  • … Darwin dismissively described as ‘a few prominent external characters’, but also difficult even to …
  • … as homologous parts. For animals that undergo significant structural remodelling during development, …
  • … of homologising parts and determining relevant taxonomic characters. Indeed, when separating allied …
  • … allowed him to identify a character from more than a purely structural perspective. Homology was …
  • … as it allowed Darwin to justify his choice of diagnostic characters with reference to the habits of …

Species and varieties

Summary

On the origin of species by means of natural selection …so begins the title of Darwin’s most famous book, and the reader would rightly assume that such a thing as ‘species’ must therefore exist and be subject to description. But the title continues, …or…

Matches: 4 hits

  • … from antiquity. The notion of an essence or essential characters that define or delimit …
  • … an artificial system; that is, he chose a specific group of structural features by which he ordered …
  • … into practice when faced with a group of organisms. Choosing characters on which to base inclusion …
  • … species diverged from each other while undergoing various structural changes, some changes to …

Darwin’s reading notebooks

Summary

In April 1838, Darwin began recording the titles of books he had read and the books he wished to read in Notebook C (Notebooks, pp. 319–28). In 1839, these lists were copied and continued in separate notebooks. The first of these reading notebooks (DAR 119…

Matches: 11 hits

  • … .— Naudins Researches on Hybrids & specific characters of Gourds. Annal des Sc. Nat. 4 …
  • … th  Microscopical Journal [ Microscopic Journal and   Structural Record ]. No r . I …
  • … of Microscopical Journal 121  [ Microscopic Journal and Structural Record ] —— 5. …
  • …  Microscopical Journal [ Microscopic Journal and   Structural Record ] to no 8. July 54 122 …
  • … pencil. 121  The  Microscopic Journal and Structural Record  was issued in two …
  • … Curiosities of literature.   Consisting of anecdotes, characters, sketches, and   dissertations, …
  • … some   inquiries respecting their moral and literary characters . 2 vols. London.  *119: 23 …
  • … remarks on the British shrews including the distinguishing characters of two species previously …
  • … figures of British plants, with their essential   characters.  37 vols. (Vols. 1–3 by J. Sowerby; …
  • … Whately, Thomas. 1785.  Remarks on some of the characters   of Shakespeare . London. [Other eds. …
  • … *119: 11v.; 119: IFC, 18a Microscopic Journal and Structural Record . Edited by D. …

Movement in Plants

Summary

The power of movement in plants, published on 7 November 1880, was the final large botanical work that Darwin wrote. It was the only work in which the assistance of one of his children, Francis Darwin, is mentioned on the title page. The research for this…

Matches: 2 hits

  • … Climbing plants  focused mostly on the structure and structural changes of various plant organs and …
  • … in the same species. Such variation may be expected in all characters which differ much in allied …

Essay: Natural selection & natural theology

Summary

—by Asa Gray NATURAL SELECTION NOT INCONSISTENT WITH NATURAL THEOLOGY. Atlantic Monthly for July, August, and October, 1860, reprinted in 1861. I Novelties are enticing to most people; to us they are simply annoying. We cling to a long-accepted…

Matches: 7 hits

  • … have acquired, before the close of the tertiary period, the characters which essentially distinguish …
  • … of reptiles present a combination of ichthyic and reptilian characters not to be found in the true …
  • … selection into) common fishes, destitute of reptilian characters, and saurian reptiles—the …
  • … it goes far toward explaining both the physiological and the structural gradations and relations …
  • … it is only in the lowest and simplest, where the being is a structural unit, a single cell, member …
  • … are primarily distinct, founded upon different categories of characters, and that all exist in the …
  • … the idea of a common descent. ‘As the community of characters among the beings belonging to …

Review: The Origin of Species

Summary

- by Asa Gray THE ORIGIN OF SPECIES BY MEANS OF NATURAL SELECTION (American Journal of Science and Arts, March, 1860) This book is already exciting much attention. Two American editions are announced, through which it will become familiar to many…

Matches: 2 hits

  • … growth, . . .  the combination in many extinct types of characters which in later ages appear …
  • … us how little light the science of a century devoted to structural investigation has thrown upon the …
letter