1850 SCIENTIFIC RESULTS OF THE VOYAGE 83 



To SIR JOHN EICHARDSON 



Oct. 81, 1850. 



I regret very much that in consequence of our being 

 ordered to be paid off at Chatham, instead of Portsmouth, 

 as we always hoped and expected, I shall be unable to 

 subaiit to your inspection the zoological notes and draw- 

 ings which I have made during our cruise. They are 

 somewhat numerous (over 180 sheets of drawings), and I 

 hope not altogether valueless, since they have been made 

 with as great care and attention as I am master of and 

 with a microscope, such as has rarely, if ever, made a 

 voyage round the world before. A further reason for in- 

 dulging in this hope consists in the fact that they relate 

 for the most part to animals hitherto very little known, 

 whether from their rarity or from their perishable nature, 

 and that they bear upon many curious physiological 

 points. 



I may thus classify and enumerate the observations I 

 have made 



1. Upon the organs of hearing and circulation in 

 some of the transparent Crustacea, and upon the structure 

 of certain of the lower forms of Crustacea. 



2. Upon some very remarkable new forms of Annelids, 

 and especially upon the much contested genus Sagitta, 

 which I have evidence to show is neither a Mollusc nor 

 an Epizoon, but an Annelid. 



3. Upon the nervous system of certain Mollusca 

 hitherto imperfectly described upon what appears to me 

 to be an urinary organ in many of them and upon the 

 structure of Firola and Atlanta, of which latter I have 

 a pretty complete account. 



4. Upon two perfectly new (ordinally new) species of 

 Ascidians. 



5. Upon Pyrosoma and Salpa. The former has never 

 been described (I think) since Savigny's time, and he had 



