On Growth and Form (Canto Classics) by D'Arcy Wentworth Thompson & John Tyler Bonner

Author:D'Arcy Wentworth Thompson & John Tyler Bonner
Language: eng
Format: mobi
Tags: Developmental Biology, Biology, History & Philosophy, Science & Math, Biological Sciences
ISBN: 1107672562
Publisher: Cambridge University Press
Published: 2014-05-29T16:00:00+00:00

Fig. 64. (a) Bubble suspended within a cubical cage; (b) Lithocubus geometricus Hkl.

Again, if we construct a cage in the form of an equilateral triangular prism, and proceed as before, we shall probably see a vertical edge in the centre of the prism connecting two nodes near either end, in each of which the Maraldi figure is displayed. But if we gradually shorten our prism there comes a point where the two nodes disappear, a plane curvilinear triangle appears horizontally in the middle of the figure, and at each of its three corners four curved edges meet at the familiar angle. Here again we may insert a central bubble, which will now take the form of a curvilinear equilateral triangular prism; and Haeckel’s Prismatium tripodium repeats this configuration (Fig. 65).

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.