258 APPENDIX D 



should find my soul too dried up to appreciate it as in old 

 days ; and then I should feel very flat, for it is a horrid bore 

 to feel as I constantly do, that I am a withered leaf for 

 every subject except Science. It sometimes makes me hate 

 Science, though God knows I ought to be thankful for such 

 a perennial interest, which makes me forget for some hours 

 every day my accursed stomach.' ' 



1869. ' I have been as yet in a very poor way ; it seems 

 as soon as the stimulus of mental work stops, my whole 

 strength gives way.' ^ 



1876. ' — and then home to work, which is my sole 

 pleasure in life.' ' 



1878. ' Thank Heaven, we return home on Thursday, 

 and I shall be able to go on with my humdrum work, and 

 that makes me forget my daily discomfort.' * 



APPENDIX D 



DE VRIES'S 'FLUCTUATIONS' HEREDITARY AC- 

 CORDING TO DE VRIES, NON-TRANSMISSIBLE 

 ACCORDING TO BATESON AND PUNNETT 



Since the note on p. 49 was written I have 

 had the opportunity of reading the whole of the 

 Presidential Address to the Zoological Section at 

 Winnipeg, a copy having been kindly sent to me 

 by my friend Dr. Shipley. I find that the account 

 of fluctuations which is so diametrically opposed 

 to that given by the author of this term in its 

 technical sense, is adopted from Mr. R C.Punnett's 

 little work Mendelism (2nd edit., Cambridge, 1907), 

 a fact omitted from the necessarily abridged 



' To J. D. Hooker, June 17— Ufe and Letters, iii. 92. 

 " To J. D. Hooker, June 22.— Life and Letters, ni. 106. 

 " To G. J. Komanes, May 29.— More LetterSj i. 364. 

 * To G. J. Romanes, Aug. 20.— More Letters, n. 48. 



