284 QUARTERLY CHRONICLE. 
mordial calyx of the pentacrinoid larva is traceable in it until 
the adherent pieces which form its base are separated, and 
the minute rosette-like plate is discovered, which is formed 
by the metamorphosis of the dasals, and was first made known 
by Dr. Carpenter. The anatomy and physiology of the vis- 
cera, &c., will form the subject of a future memoir. 
Mr. J. W. Hulke has contributed a paper on the “ Chame- 
leon’s Retina, of which a short abstract appears in the ‘ Pro- 
ceedings’ of the Society, of June 15th. 
Miscellaneous——The meetings of Section D at the British 
Association gathering, which has just terminated at Birming- 
ham, were not very rich in papers on subjects in the investi- 
gation of which the microscope had been used. It is a some- 
what difficult thing to know whether such papers as those of 
Mr. Spence Bate “‘ On Praniza and Anceus,” of Mr. Norman 
“On Marine Invertebrata dredged off Guernsey,” &c., come 
rightly within our domain. Assuredly these gentlemen have 
had to use their pocket glasses, and not unfrequently their 
microscopes, in the identification of the forms obtained; and 
hence we may claim to bring their researches before our 
readers’ notice, and hope to be able to obtain abstracts of 
these communications for our next Chronicle. Sir John 
Lubbock’s paper, ‘‘ On the Development of the Larva of Chleon. 
(Ephemera),’ was one of very great interest, and will be 
published in the Linnzean Society’s ‘ Transactions,’ in which 
a former part of the same series of observations has already 
appeared. There can be no possible excuse for an idle micro- 
scopist when such charming and invaluable investigations as 
these are to be made on the commonest of water-animals. Why 
is not a large body of observers found ready to join in this field 
of research—to sit down patiently and intelligently to watch the 
changes of some of our most common insects and other in- 
vertebrates from the egg to maturity ? English microscopists, 
as a rule, are too fond of playing with their instruments, when 
they might turn them to the highest possible purpose—the 
investigation of truth. 
In Sub-section D a lively discussion on cell theories took 
place, in which Drs. Lionel Beale and Hughes Bennett, Mr. 
Turner and Mr. Jordan, took part. 
Dr. Rolleston, the Professor of Physiology in the Univer- 
sity of Oxford, brought forward an admirable paper “ On 
Certain Points in the Anatomy of Lumbricus terrestris,’ im 
which he added some interesting discoveries of his own on 
this subject to the details already recorded in Mr. Ray Lan- 
kester’s essays published in this Journal. They referred 
principally to the muscular system and the salivary organs. 
