120 BIBLIOGRAPHY. [see 
which Laomedea obliqua and geniculata abound. The urn-shaped egg- 
cases of Purpura lapillus and the riband-like strap of eggs of Doris 
tuberculata can generally be found to illustrate the extraordinary 
embryonic development of the mollusca; there is, in fact, scarcely a 
limit to the list of subjects waiting for examination. For full appre- 
ciation of minute structure comparison with permanent specimens is 
both necessary and interesting. They cannot, however, be seen under 
sufficiently varied conditions, and we may as well take an ancient 
Egyptian as a specimen man as trust exclusively to the mummies in 
balsam which fill our cabinets; we must, instead—as students of Na- 
ture—follow her home and watch her ways patiently, as far as we can. 
Nothing can be known of the protozoa, or rotatoria, unless we examine 
them in life. Cyclosis in vegetable cells must in like manner be seen 
in life to be seen at all. The generation of the cryptogams would 
be really hidden if the germination of their spores had not been a 
subject of unwearied attention. The structure of the Foraminifera 
was not demonstrated by Carpenter without systematic work. 
(To be continued.) 
Bristot MicroscopicaL Socrery. 
April 27th, 1870. Mr. W. J. Fedden, President, in the chair.— 
The minutes of the two preceding meetings were read and confirmed, 
and two new members were proposed for election. 
Dr. H. E, Fripp then exhibited and described a series of anatomical 
preparations, chiefly illustrative of diseased conditions of the brain 
tissues. 
May 18th. Mr. W. J. Fedden, President,in the chair.—The minutes 
of the last meeting were read and confirmed. 'Two new members were 
elected, and three gentlemen were proposed as candidates to be balloted 
for at the next meeting. 
Mr. T. H. Yabbicom, C.E., then read a paper “On Raphides.” 
Dr. H. E. Fripp exhibited and described a peculiar form of dis- 
secting microscope made by Zeiss of Jena. The instrument possesses 
many peculiar advantages, and was much admired by those present. 
Mr. F. R. Martin also exhibited Mr. Browning’s new portable 
microscope. 
BIBLIOGRAPHY. 
Die zonula ciliaris yon Dr. F, Merkel. Leipzig. Engelmann. 
Sur les Epines des Echinocidarites, par M. Ch. Des Moulins. 
Bordeaux. 
To Correspondents.—Owing to new arrangements, the Journal goes to press 
earlier than previously. Hence we have been unable to insert in the present 
number communications from Messrs, Wenham, Slack, and Dr. Pigott. 
