Polishing of Granite. 185 
7. Universities —The following is the enumeration of 
of some of the Prussian Universities, in the summer ses- 
sion of 1822, 
Stu. Foreign’s. Theol’y. Jurisp’e. Medic. Philos’y. 
109 wat 411 70 174 
Halle, 866 147 540 198 78 50 
Konisb’g, 259 29 84 95 20 60 
8.—SwiTzeERLAND. GeNevA.—-Monitorial Instruction. 
—A new school, on the plan of mutual instruction, was 
opened in the latter part of last year, in a 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 the instructors to employ it. At 
a time not distant, we may hope that five or six hundr 
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- 
um. It is 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. 
ie 
Von. VIII.—No. 1. ce 
