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PEP-Easy Tip: To save PEP-Easy to the home screen

PEP-Web Tip of the Day

To start PEP-Easy without first opening your browser–just as you would start a mobile app, you can save a shortcut to your home screen.

First, in Chrome or Safari, depending on your platform, open PEP-Easy from You want to be on the default start screen, so you have a clean workspace.

Then, depending on your mobile device…follow the instructions below:


  1. Tap on the share icon Action navigation bar and tab bar icon
  2. In the bottom list, tap on ‘Add to home screen’
  3. In the “Add to Home” confirmation “bubble”, tap “Add”

On Android:

  1. Tap on the Chrome menu (Vertical Ellipses)
  2. Select “Add to Home Screen” from the menu


For the complete list of tips, see PEP-Web Tips on the PEP-Web support page.

Tansley, A.G. (1927). The Memory Factor in Biology: By C. J. Patten, M.A., M.D., Sc.D. (Baillière, Tindall & Cox, London, 1926. Pp. xiv + 175. Price 5 s.). Int. J. Psycho-Anal., 8:292.

(1927). International Journal of Psycho-Analysis, 8:292

The Memory Factor in Biology: By C. J. Patten, M.A., M.D., Sc.D. (Baillière, Tindall & Cox, London, 1926. Pp. xiv + 175. Price 5 s.)

Review by:
A. G. Tansley

The author of this little book, who is Professor of Anatomy in Sheffield University, is 'an ardent and zealous advocate of the doctrine of somatic inheritance' (p. 43). He regards 'somatic inheritance' (transmission of acquired characters) as the prime factor in evolution, and seeks to show, as others have done before him, that 'organic memory' is what he calls the vis a tergo of evolutionary change.

The book contains no marshalled evidence, no sustained argument. The author is extremely discursive, occupying most of his space in stating his own beliefs and describing various biological phenomena in terms of them, supporting himself by quotations from Hering, Semon, Samuel Butler, Sir Francis Darwin, and others. The last chapter begins: 'The evidences that memory is the mainspring, the vis a tergo of Evolution, are convincing'. It may be so, but unfortunately the author quite fails to make the point clear to his readers. Incidentally the book contains many sound, if somewhat platitudinous, precepts, especially in the chapter on Education.

[This is a summary or excerpt from the full text of the book or article. The full text of the document is available to subscribers.]

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