322 
POPULAR SCIENCE REVIEW. 
Blanlvley, F.R.M.S. — Researclies on the Constitution and Development 
of the Ovarian Egg of the Sacculinge. By M. J. Gerhe. — On the Sim- 
ple Structure of Compound Leaves. By W. R. McNah, M.D., Edin. 
— On the Microscopical Structure of some Precious Stones. By H. 
C. Sorhy, F.R.S., &c. — On the Construction of Object-glasses for the 
Microscope. By F. H. Wenham. — On the Rhizopoda as embodying 
the Primordial Type of Animal Life. By G. C. Wallich, M.D., F.L.S., 
&c. — On the Structure of the Red Blood Corpuscle of Oviparous Verte- 
brata. By William S. Savory, F.R.S. — A Small Zoophyte Trough. 
By W. P. Marshall, President of the Birmingham Natural History and 
Microscopical Society. — On the Preparation of Rock Sections for Micro- 
scopic Examination. By David Forbes, F.R.S., &c. — On the Markings 
on the Pleurosigma angulatum and on the Lepisma saccharina. By J . 
B. Dancer, F.R.A.S. 
Mai/. — Notes on Zoosperms of Crustacea. By Alfred Sanders, M.R.C.S., 
F.R.M.S. — Protoplasm and Living Matter. By Dr. Lionel S. Beale, 
F.R.S., Fellow of the Royal College of Physicians, Physician to 
King’s College Hospital, and lately Professor of Physiology and of 
General and Morbid Anatomy in King’s College, London. — On some 
New Infusoria from the Victoria Docks. By Wm. S. Kent, F.R.M.S. 
— Professor Owen on Article VT., No. HI., of the ^ Monthly Micros- 
copical Jornmal.’ — On the Construction of Object-glasses for the Micro- 
scope. By F. II. Wenham. — Description of Parkeria and Loftusia, 
two Gigantic Types of Arenaceous Foraminifera. By Dr. Carpenter, 
V.P.R.S., and H. B. Brady, F.L.S. — The Microscope in Silkworm 
Cultivation. ByM. Cornalia. 
June. — On the Proboscis of the Blow Fly. By W. T. Suffolk, F.R.M.S. 
— Note on the Blood Vessel System of the Retina of the Hedgehog. 
By J. W. Hulke, F.R.S. — On Crystals Enclosed in Blowpipe Beads. 
By II. C. Sorhy, F.R.S., &c. — A New Process of Preparing Specimens 
of Filamentous Algre for the Microscope. By A. M. Edwards. — Action 
of Anaesthetics on the Blood Corpuscles. By J. H. McQuillen, 
M.D., D.D.S., Professor of Physiology in Philadelphia. — A New Uni- 
versal Mounting and Dissecting Microscope. By W. P. Marshall, 
President of the Birmingham Natural History and Microscopical 
Society. — On the Construction of Object-glasses for the Microscope. 
By F. II. Wenham. — On Free Swimming Amcebas. By J. G. Tatem, 
Esq. 
The Binocular Spectnim Mic7'oscope. — This instrument, which was de- 
scribed a few nights since at the Royal Society by Mr. Crookes, and which 
was favourably spoken of by Dr. Carpenter, is made by Mr. Charles Collins, 
of Great Titchfield Street, W. The principal features are the sub-stage 
and the box of prisms. The former carries a sliding-plate to hold the slit 
and apertures, a spring stop and screws for adjusting them, and a reversed 
object-gla.ss. The slit and this object-glass are about two inches apart, and 
if reflected light is pa-ssed along the axis of the instrument, the object-glass 
forms a very small image of the slit in front of it. A milled head moves 
the whole sub-stage, and screws bring the image of the slit to any part of 
