=. 
SF the greater axis of the hoon deviates 
a@ little from the direction of the radius 
vector,” a line, “ which joins its centre 
with that of the earth, the terrestrial at- 
fraction will tend to bring it down to 
this radius; in the same manner as gra- 
ree a pendulum towards the ver- 
al.” 
_ The physical cause of the moon at all 
Zimes presenting the same face to the 
éarth, ay be inferred from what fol- 
ws. “Ifthe primitive motion of the 
Station of this satellite had been suffi- 
siently rapid to have overcome this ten- 
ine, the period of its rotation would 
t have been perfectly equal to that of 
its revolution, and the difference would 
have discovered to us successively every 
point in itssurface. But at their origin, 
the angular motions of rotation and revo- 
Tution having differed but little, the force 
by which the greater axis of the moon 
fended to deviate from the radius vector, 
“was not sufficient to evercome the ten- 
dency of this same axis towards the ra- 
dius due to the terrestrial gravity, which 
by this means has rendered their motions 
Tigorously equal.” 
The local advantages which will arise 
fo beings who may inhabit other worlds, 
om the operation of physical causes, 
are not likely to be known to usin this 
State of being; and, however laudable 
their investigation may be, I cannot but 
Tegret, that modern, or rather popular, 
Science seems more devoted to them, 
than in improving or communicating a 
Biiowledge of the causes which’ produce 
the phenomena of nature. It is piously 
fashionable to refer every phenomenon to 
the goodness of God, as if religion taught 
“as to be ashamed of looking through the 
medium of that causation which con- 
nects us and all nature with its benévo- 
Jent father. The word and work of the 
Almighty must go band in band, nor is 
it possibe, by degrading the study of his 
works, that dignity can be added to the 
Sentiments of rational beings. 
Hackney, Joun Jackson, 
May 3,181t. Philosophical Lecturer, 
a 
To the Editor of the Monthly Magazine. 
STR, 
S the, knowledge of the following 
fact may be of some use, I will 
thank you to give it a place among the 
‘miscellaneous articles which occupy the 
pres: of your widely extended and useful 
s 
fayazine. On opening one of the leaves 
of tera in which I Keep bees, age 
WTHKY Mac, No. 214, 
"Theory of Harmonics. 
529 
cording to the French method, for thé 
purpose of taking the honey withovt de« 
stroying the labourers, one of the inhas 
bitants resented the offence, by deeply 
infixing his sting just below my left ear. 
The pain was unusually severe, and ina 
few moments I felt my swallow greatly 
affected. Much alarmed, I hastened 
into the house to procure some sweet 
oil, with which to rub the part affected, 
In a little while I felt entire reef from 
the spasm which had alarmed me, and, 
in a quarter of an hour, or twenty mi- 
nutes, continuing the friction all -this 
time, was perfectly relieved from all 
pain, J. Bicneno, 
Newbury, May 15, 1311. 
For the Monthly Magazine. 
THEORY Of HARMONICS. 
Quid velit et possit Rerum Coucurdia Discorse 
Hor. 
HE analogy between musical sounds 
and coluurs, or, in other words, bes 
tween wudible and visual harmony, first 
discovered by Newton, appears to be 
perfect, f 
The natural audible chord is the 
third and fi/th, completed by the octave, 
or reduplication of the first more acute, 
or grave. 
The natural visual chord is the sam@ 
completed by its octave, or the same 
colour, more intense or weak. 
The four intermediate sounds and 
colours, form the intermediate degreeg 
of the musical and optical scale. These 
are the primary distinct. sounds and 
colours, of which all the rest are come 
pounded. A perfect white in colour, a 
perfect consonance in music. That they 
are concurds, seems to result from this, 
that they have the utmost distinctness 
and simplicity in the perception of thems 
an obvious, striking, interesting differs 
ence. They are consequently fit to lead. 
and support the whole system, their 
recognition being so easy and agreenblés 
Every primary sound contains its hare 
mony. It has been proved by expe 
riment, that every, primary ray is also 
resolvable into its harmonies, and cons 
tains the two others in subordinate propor. 
tion. Hence their rclation to each other, * 
and to the discords.. The discords are 
those sounds and colours which partake 
of the two concords which are contiguous 
on each side; as 
E the 2d to Dand F. 
G (the 4th of D) to F and Ay 
Orange to red and yellow, ~ 
Gieen to a} and blue. 
