Retrospective Criticism. 281 



present stated, on good authority, that there were persons, 

 not otherwise deficient in the sense of hearing, who could 

 not hear the song of a particular bird, while to others who 

 stood close by them it was perfectly audible. He did not 

 recollect the species of bird. Two members of the same 

 party likewise had, each of them, a friend, the one a gentle- 

 man, and the other a lady, who could not distinguish blue 

 from red. When the lady wanted to buy a riband of either 

 colour, she always took a friend with her, to prevent mistakes, 

 and insure the purchase of the right article. All other 

 colours, except blue and red, the persons alluded to could 

 accurately distinguish. Yours, &c. — W. T. Bree. Allesleii 

 Rectory, March 1. 1833. J»W * "^ ^ T j "J 



Mr. Conway s supposed Lily Encrinite (p. 126.) is the Cya- 

 thocrinites tuber culdtns of Miller. — Sir, I send you a plate 

 (from a specimen in my collection) of the superior termination 

 of Miller's Cyathocrinites tuberculatus, to which' species 

 Mr. Conway's specimen (fig. 14. p. 126.) must be referred, 

 and not, as there stated, to the lily encrinite of Parkinson 

 (E'ncrinus moniliformis of Miller), which, I believe, has 

 not yet been found in England. The only difference be- 

 tween the figure in p. 126. and that in " Miller's Crinoidea " 

 is the increasing diameter of the column, as it approaches 

 the body; which is not the case in Miller's figure. In the 

 plate I send, the column is wanting ; but other specimens in 

 my cabinet, to which a portion of the column still adheres, 

 agree so perfectly with the figure in p. 126. in that part, 

 as to leave no doubt of their identity. As it appears that 

 Mr. Conway occasionally visits the museum of the Bristol 

 Institution, he may satisfy himself of the correctness of this 

 statement by an inspection of the private collection of the late 

 Mr. Miller, the whole of which was purchased for that in- 

 stitution, and of course deposited in its museum. I am, Sir, 

 yours, &c. — W. Gilbertson. Preston, March 16. 1833. 



The engraved inscription on the plate received is " Cya- 

 thocrinites tuberculatus, found near Whitewell, in Bowland, 

 by W. Gilbertson, Preston, Lancashire. J. D. C. Sowerby, 

 fee." The plate is sent to Mr. Conway. — J. 52* 



The Lily 'Encrinite not found in British Stratd. -—-TtUink 

 Mr. Conway (p. 125.) may rest assured that he is not in 

 possession of the lily encrinite (E'ncrinus moniliformis of 

 Miller, and E. /iliiformis of Schlotheim). The comparative 

 figure you have given from Parkinson is sufficient evidence 

 of the truth of my assertion. In the first place, the forms of 

 the columns do not agree: in the former it is smooth ; in the 

 latter are observed alternate large and small joints or ver- 

 tebra?. Neither do the ossicula, or bones of the pelvis, arms, 



