150 Scientific Intelligence. (Ave. 
ARTICLE XI. 
SCIENTIFIC INTELLIGENCE; AND NOTICES OF SUBJECTS 
CONNECTED WITH SCIENCE. 
J. Lectures. 
The following lectures, which were formerly delivered in the 
Theatre of Anatomy, will in future be delivered in the Medical 
Theatre, No. 42, Great Windmill-street:— 
1. On the Laws of the Animal Economy, and the Theory and 
Practice of Physic: by George Pearson, M.D. F.R.S._ senior 
physician to St. George’s Hospital, &c. &c. * 
“2, On Materia Medica, Therapeutics, and Medical Jurispru- 
dence: by Richard Harrison, M. D. Fellow of the Royal College 
of Physicians, and Physician to the Northern Dispensary. 
3. On Chemistry : by —— Granville, M.D 
4. On the Theory and Practice of Surgery: by B. C. Brodie, 
F.R.S. Assistant Surgeon to St. George’s Hospital. 
Sir Everard Home’s gratuitous lectures to the pupils of St. 
George’s Hospital will also be given in this theatre. 
Il. Vttro-Cerite. 
There has been lately found at Finbo, near Fahlun, in Sweden, 
a new substance, containing 
Fame so: 5 PP PIT I ok OL M777 
Weerat ts FOSTER a .- 14°60 
Oxide of cerium .......... My Seige ON SG 
Pluori@ acid “32 6.5 SS, ae oF FT yaea4e 
99°98 
Messrs. Gahn and Berzelius have given it the name of yttro~ 
cerite. It has been found in the form of a powder, of a violet 
colour, or pale blue, covering pyrophysalite. 
Ill. Steinheilite. 
This mineral has been long valued in collections, on account of 
its blue colour, but has been merely considered as quartz. ‘Count 
Steinheil, Governor General of Finland, having, however, from 
the angles of some crystals, considered it as something different 
from quartz, requested Professor Gadolin to examine it ; and he has 
found it to contain a large quantity of alumina. It appears to be 
something between quartz and sapphire. 
* Some of Dr. Pearson’s lectures are delivered at his theatre, in George-stréet, 
Hanover-square, 93 ‘si ‘vi ‘ 
