Py 
Polishing of Granite. 185 
ie 
7. Universities.—The following is the enumeration of 
of some of the Prussian Universities, in the summer ses- 
sion of 1822. 
No. Stu. Foreign’s. heol’y. Jurisp’e. Medic. Philos’y. 
g Pp } 
Berlin, 1182 109 997 411 370!" 174 
Bonn, 571 80 151 206 130 84 
Breslau, 539 60 -231 159 46 100 
Halle, 866° = 147 540-198 78° 50 
Konisb’g, 259 29 84 95 20 60 
8.—SwiTZERLAND. Geneva.—+Monitvrial Instruction. 
—A new school, on the plan of mutual instruction, was 
opened in the latter part of last year, ina new building, 
within the enclosure of the college yard. This new school 
is placed under the direction of the same committee, which 
has had so much success in that of St. Gervais. ‘The lat- 
ter destined for boys, and, that of Grenette for girls, in- 
crease every day in usefulness. ‘The method of mutual 
instruction is also in vigorous operation, not only in the. 
seventh class of the college, but also in the fifth and sixth 
classes ; and it will be extended to the superior classes, as 
experience shall enable thé instructors to employ it. At 
a time not distant, we may hope that five or six hundred 
children, which hitherto have received little or no educa- 
tion, will enjoy the benefits of instruction suited to their 
age and condition, and, elevated in the scale of morals, and 
in the proper employment of their time, will become use- 
ful members of the Genevese family. 
9. Polishing of Granite.—The most suitable substance 
for giving a fine polish to granite, is the powder of corun- 
dum. Itis mixed, not with wax, but with lac, and the 
greater the care taken in effecting the mixture, the finer 
and more durable is the polish. Itis essential that the pow- 
der employed for this purpose should be extremely hard 
and hence that of emery (corundum,) is preferred. 
Vou. VIII.—No. 1. QA 
