316 Mode of preferving Wood, and browning Gun-tarrels. [May ly 
do therefore confider this arrangement of 
thofe detective intervals as new. 
Wl. The term Wolf is a reproach or 
fitgma. Ihave traced the origin of this 
metaphor as far back as Pretorius, who, 
im his Syntagma (1614) fpeaks of the 
Wulf. Not having feen this book my- 
felf, and depending wholly on the au- 
thority of a quotation in Adlung, I can- 
not fay how, or to what defect it was 
originally applied. 
IV. Glee-fingers may fink without 
tempering. ‘This extraordinary affertion 
can only have arifen from fome mifap- 
prehention of the expretlion temperament, 
I therefore aik— 
1. Dogs this defeét of keyed inftru- 
ments exift in unaccompanied vocal 
mufic? 
2. Can occafional depreffion (or even 
elevation) of pitch refer to any fixed 
fyftenr of time, except that of perfect 
intervals‘as fixed by the ratios, or divi- 
fions of the monochord? 
3. If temperament fignifies deviation 
from the juli proportion of intervals, 
how can voices fink without tempering ? 
. The Huygenian Theorem, (that of a 
fingle voice finging C F D GC) has been 
adduced as a proof that a melody may 
fink a comma every time it 1s repeated. 
Thus in five repetitions it would fall to 
B, and in four more to B flat. But 
Rameau has fhewn, that the original 
ampreffion of C would preferve the pitch, 
in defiance of the defective third D—f; 
and Mr. Maxwell (Effay on Tune, p. 
218) has entered at large into the pro- 
bable reafons, why vocal performers 
alter the pitch; which he aitributes (I 
think with great appearance of truth) 
not to mufical, but to anatomical caufes. 
{fee his Effay, p, 241.) Submitting my 
defence to the judgment of the public, 
and the candour of my adverfary, ‘I. 
am happy to find he thinks well ef my— 
indufiry and refearch. Sorry I am 
that any imcantious language of mine 
fhould have injured his feelings. My 
object was to attract his attention, and 
thus far I have fuceceded. ‘Temper, 
however, fhould be always preferved, 
and my conclufion fhall be an extract 
from Paical. 
““ Violence and truth have no power 
ever each other. The former has but 
a limited and temporal courfe; while 
truth fabfifts for ever, and im the end 
miuft triumph over all ber enemies, be- 
eaufe. fire is eternal and powerful as 
God himntelf” Your's, &e. 
March 16, 1807. J. W. Caxicor. 
Upper Grofsenor-fireet. 
} 
Lo the Editor of the Monthly Magazine. 
SIR, : 
Hane lately, among other pa-. 
pers, become poffefled of the two 
following, I take this opportunity of ren- 
dering them p&blicly beneficial, through 
the medium of your much read Maga- 
zine, 
To keep Crows from Corn, 
Take a quart of train-oil, as much 
turpentine, and bruifed gunpowder, boil 
them together, and when hot’ dip pieces 
of rags in the, mixture and fix them on 
flicks in the field. About four are fufi- 
cient for an acre of corn, 
To Preferve Wood in Damp Situations. 
Two coats: of the following prepara- 
tion are to be applied, after which the 
wood is fubject to no deterioration what- 
ever from humidity. ‘Twelve pounds of 
refin, are to be beaten in a mortar, te 
which three pounds of fulphurand twelve 
pints of. whale-oil are td be added. - 
This mixture is to be melted over the 
fire, and ftirred during the operation. 
Ochre reduced to an impalpable powder 
by triturating it with oil, may then be! 
combined in the proportion neceflury 
to give either a lighter or a darker co- 
lour to the material. The firft coat 
fhould be put on lightly, having been 
previoufly heated; the fecond may be 
applied in two or three days, and a third 
after an equal interval, if, from the pe- 
culiar dampnefs of the fituation, it fhould 
be judged expedient. Your's, &c. 
| Joun Morriss FLinpaLyy 
March 6, 1807. whi 
a ‘ 
To the Editor of the Monthly Magazine. 
SIR, 
OUR valuable Correfpondent, Mr. 
Pybus, having in your lafi num- 
ber, requefted one of your readers to 
inform him of a’ method of browning 
gun-barrels; I am happy (through the 
medium of your mifcellany) to point out _ 
to him a: way which has always proved 
fuccefsful. After the barrel is finifhed, 
to give it a brown colour, it 1s to be rub- 
bed over with aqua-fortis or fpirit of 
falt diluted with water, and then to be 
laid by, for a week or fo, till a complete 
coat of ruft is formed. A little. oil is 
then to be applied, and the’ furface 
being rubbed dry, it is to be polifhed by 
means of a hard brufh and a little bees | 
wax Your’s, &c. | 
_. Londons , G. A. M. 
February 11, 1807. 
THE 
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