38 
PROCEEDINGS OF SOCIETIES. 
slides within another socket with a delicate rack-and-pinion movement 
for a fine adjustment. It has a revolving stage like Nachet's, packs 
in a very small compass, and has sufficient range of motion to work 
with a 4-inch objective. 
Mr. Moginie showed a new microscope of large size, arranged with 
folding legs, to pack in a narrow box. From the stretch of the legs 
when open, and the disposition of the weight in relation to the points 
of suspension, it is remarkably steady. 
The type slide of Holothuria plates by Moller, exhibited by Mr. 
Baker, afforded a fresh proof of the artist's remarkable skill, and, like 
his type diatom slides, will be found highly instructive. 
Sections of Dictyoxylon from the Lancashire coal-moftsures, shown 
by Mr. How, and a section of fossil wood belonging to the genus Arau- 
caria, from Edinburgh, exhibited by Dr. Millar, may also be signalized, 
and also a piece of limestone wonderfully rich in polyzoa. 
In selecting the above for mention, it must on no account be con- 
cluded that many others were not well worthy of special description. 
The Society was indebted to Mr. Baker and Messrs. How for the 
loan of excellent lamps. 
Exhibitors and Objects.- 
Mr. James Bell : Coffee pure, and adulterated with mustard husks 
and with locust-bean. 
Mr. John Browning : Worm found in hemp of the deep-sea cable, 
and an insect found in the guttapercha of ditto. 
Mr. Charles Baker : Type slide of Holothuria plates, by Moller. 
Mr. John Badcock : Melicerta ringens, Floscularia ornata, and 
Actinophriis sol, alive. 
Mr. W. G. Cocks : Triceratium fams (hexagonal form). 
Mr. Thomas Curties : Dissections of spider, beetles, &c., by Mr. 
Tatem, and cuticle of Onosma taurica. 
Mr. Frederick Fitch : Earth mite and acarus. 
Mr. J. F. Gibson : Acarus of bat. 
Dr. W. J. Gray : Portion of skin from the neck of a fowl, to which 
in a space not more than one-third of an inch square, are firmly 
attached, by the insertion therein of their piercing organs, nearly one 
hundred fleas ! from Ceylon. 
M. A. de Souza Guimaraens : Ovum, larva, and pupa of Phylloxera 
vastatrix and the Phylloxera of the oak. 
Mr. F. Hailes : Selected foraminifera, from Jersey. 
Messrs. How : Section of Dictyoxylon, from the coal-measures, 
Lancashire ; and section of human liver. 
Mr. W. T. Loy : Dissections of lepidopterous larvae ; salivary 
glands of Java cockroach, Periplaneta orientalis. 
Mr. Henry Lee : Young cray-fish, Palinurus vulgaris. 
Dr. Matthews : Canadian lichens, illuminated by sub-stage mirror. 
Mr. Moginie : Skin from the finger, showing fat-vesicles, &c. 
Mr. S. J. Mclntire : Foot of West Indian spider, Test Podura 
Bcale, with Wenham's reflex illuminator and Nachet's ^th objective. 
Dr. Millar : Section of fossil wood from Edinburgh ; fossil polyzoa, 
