1877 XEEYES OP AL'EELIA 63 



of meat put on any one gland on the disc causes all 

 the surrounding tentacles to bend to this point ; and 

 here there can hardly be differentiated lines of convey- 

 ance. It seems to me that the tentacles probably 

 bend to that point whence a molecular wave strikes 

 them, which passes through the ceUular tissue with 

 equal ease in all directions in this particular case. 

 But what a fine case that of the Aureha is ! 



Forgive me for bothering you with another note. 



Yours very sincerely, 



C. DAJBwm. 



From G. J. Momanes to C. Darwin, Esq. 



Dtmskaitli, Boss-shire, N.B. : August 13, 1877. 



I thought you had given me quite enough praise 

 in your first letter, but am not on that account the 

 less pleased at the high compliment you pay me 

 in the second one. The ending up was what the 

 people at the Institution ' seemed to Hke best. 



Pray do not think that I have yet made up my 

 mind about the ' muslin.' On the contrary, the more 

 I work at the tissues of Aureha the more puzzled I 

 become, so that I am thankful for all criticisms. If 

 Aureha stood alone, I should be inclined to take your 

 view, and attribute blocking of contractile waves in 

 spiral strips, &c., to some accidental strain previously 

 suffered by the tissue at the area of blocking. But 

 the fact that in Tiaropsis the polypite is so quick and 

 precise in locahsing a needle, prick, seems to show 

 that here there must be something more definite 



' He had just lectured at the Eoyal Institution. 



