SCIENTIFIC SUMMARY. 
529 
Structure and Growth of the Tissues. — Dr. Beale in his recently concluded 
Lectures before the College of Physicians, maintains that every living struc- 
ture, and every elementary part that is living, is composed of matter which 
is forming and matter which is formed — germinal matter and formed material. 
He remarks that the nucleus of the frog’s blood-corpuscle is germinal 
matter, the external red portion (cell-wall, and coloured contents) formed 
material. That the white blood corpuscle, the lymph and chyle corpuscle, 
and the pus and mucus corpuscle are composed entirely of germinal matter, 
with a very thin layer of formed material ; the viscid matter or mucus 
between the mucus corpuscles is formed material. The nucleus of an epi- 
thelial cell is germinal matter — and in a fully-formed cell, the outer part, 
cell-wall, or cell-contents, consist of formed material ; and so on. 
Musexnn Microscope.- — Messrs. Smith & Beck, who are constantly exerting 
their ingenuity in some new application of the microscope, have exhibited to 
the Microscopical Society a microscope, under this name, adapted for use in 
public places, where it may be handled by persons unaccustomed to its use, 
without fear of destruction or damage. It consists of a microscope-body 
fixed upon a cylinder of brass which rests upon a cast-iron frame. The brass 
cylinder has a large series of slides arranged upon smaller cylinders, which by 
turning a milled head are brought successively before the eye. Moreover, this 
microscope by a simple adjustment is readily adapted to either of three 
different powers with which it is supplied. 
1 & 2. The Desmidete are microscopic green Algae, the germs or capsules of 
which are termed “sporangia.” The cells are formed of two symmetrical 
valves, the junction being marked by a division of the green tissue. Hence 
they are termed duplicated. 
3. Chert, a granular variety of quartz. 
4. Filaridse, microscopic parasitic worms found in the fluids of the body, 
as in the blood, chyle, and humours of the eye. 
5. Sphseria, a very large genus of fungi, of which several hundred species 
are described. 
6. Mucor, a sort of mouldiness, consisting of vegetable cells of a parasitic 
nature. 
7. Pulvillus, a soft, membranous, cleft cushion, situated on the under sur- 
face of the fifth tarsal (or ankle) joint of the fly. 
PAPER was read a short time since at the Chemical Society of 
London, by Mr. Frederick Field, upon the “ Universal Distribution 
of Bismuth in the Minerals of Copper containing Sulphur.” From an exten- 
sive investigation upon the composition of commercial coppers from all parts 
of the world, conducted by Messrs. Abel and Field, in the majority of which 
bismuth was detected in very sensible quantities, Mr. Field determined 
to submit a vast number of copper ores to minute analysis, in order to 
arrive at a satisfactory conclusion from whence bismuth was derived. Speci- 
mens were obtained from various localities in England, Scotland, Ireland, 
NOTES. 
MINERALOGY AND METALLURGY. 
