168 Foreign Literature dnd Science. 
roaches; that a single drop applied to the corselet is more 
effectual in speedily killing perfect insects, than the more 
common method of dipping: the transfixing pin in aqua- 
fortis. For destroying the mitute white acari, that infest 
the hairs of specimens it proves speedily effectual.’ As far 
as I can judge, this met promises, from its umes 
and easy application to be very useful, not only to collec- 
tions of natural history exposed to public view, but will ma- 
- terially abridge the labor, and save the precious time of the 
scientific traveller in preserving his collections. It will also, 
I doubt not, prove an acceptable boon to furriers; and other 
dealers in peltry. nd the anatomist would probably also 
convert it to his use with much advantage. — Ed. Pil. Jour. 
5. 5. Falling Stars:i—Dr. Brandes of Brest and. ‘several 
mh Pe rt po he 
a these ventarkable “meteors, osc oe rannetad 
beyond the atmosphere of the earth, at first sight appear to 
ve in every possible direction, yet according to the obser- 
vations of Dr: Brandes atid’ his friends, it would seem that 
the most frequent direction is that opposite to the course of 
the earth in: mits orbit.— Ed. Phul. Jour. 
6. Comparative durability of Marble and Granite. A) 
fragment of a column in the ruins of Capernaum, mention- 
tioned by Prof. Hall, is of an'extremely beautiful granular 
marble, which has all the frestiness? and ‘brillianey of a spe- 
cimen recently’ taken: from a ea quarry. It has been 
full p against the’attacks of the elements, during the 
lapse of perhaps two thousand years. Although limestone 
is softer than granite, it is frequently less liable to decompo- 
4. This remark:accords with the observations of sever- 
al travellers in Egypt, Greece, and Palestine. The feldspar’ 
= Dap cc is affected by the action of the air and moist> 
ner than either of its other ingredients. “ Of all’ 
spurs substances used by the ancient artists,” says Dr. 
Clarke, “ Parian marble, when without ‘veins, and ‘therefore’ 
free from extraneous bodies, seems to have best resisted the’ 
various attacks made upon Grecian sculpture. It is found’ 
unaltered, when granite, and even porphyry, coeval as to’ 
ial state, have suffered Aaabh poate: —Ed. _ 
