1893 COMPLETION OF THE ' SPIRULA ' MEMOIR 305 



handwriting, which is a plague to myself as well as to 

 other people. 



My hope is that you will be good enough to consider 

 these figures as materials placed in your hands, to be made 

 useful in the memoir on Spirula, which I trust you will 

 draw up, supplpng the defects of my work and checking 

 its accuracy. 



You will observe that a great deal remains to be done. 

 The muscular system is untouched ; the structure and 

 nature of the terminal circumvallate papilla have to be 

 made out ; the lingual teeth must be re-examined ; and 

 the characters of the male determined. If I recollect 

 rightly, Owen published something about the last point. 



If I can be of any service to you in any questions that 

 arise, I shaU be very glad ; but as I am putting the 

 trouble of the work on your shoulders, I wish you to have 

 the credit of it. 



So far as I am concerned, all that is needful is to say 

 that such and such drawings were made by me. — Ever 

 yours very faithfully, T. H. Huxley. 



HODESLEA, Oct. 12, 1893. 



Dear Professor Pelseneer — I am very glad to hear 

 from you that the homology of the cephalopod arms with 

 the gasteropod foot is now generally admitted. When I 

 advocated that opinion in my memoir on the " Morphology 

 of the Cephalous MoUusca," some forty years ago, it was 

 thought a gi'eat heresy. 



As to pubHcati&n ; I am quite willing to agree to 

 whatever arrangement you think desirable, so long as you 

 are kind enough to take all trouble (but that of " con- 

 sulting physician") off my shoulders. Perhaps putting 

 both names to the memoir, as you suggest, will be the best 

 way. I cannot undertake to write anything, but if you 

 think I can be of any use as an adviser or critic, do not 

 hesitate to demand my services. — Ever yours very 

 faithfully, T. H. Huxley. 



VOL. Ill X 



