358 Explanation of an Experiment on Tuning. 
preference over other yellows, on account of the small 
quantity of it which is requisite. 
When mixed with gum, this substance might give a 
much purer and much more solid yellow than camboge. 
From this examination of gum ammonia, it results that 
100 parts are composed as follows : x 
UMD... .opeijoss ays oyu ies selaials ale Saleh Oie se QMEGEAS 1 
BRESIM «0 lauds niyis ose, thie WiBie shore ne santos Sie 
Glutinous. matter ...)...¢: «.+.<:0awiatuecohewe 
Waster ocdh2. =. +c enient cabo h ENG ee 
TAO8S 5 os eos b <i> in s isin eats wcahatd aby? okt 
Extractive matter .......assisesitiene (O10 
enamel 
Totabirs \ vamAch@m 
=== _s_===== 
LXI. Explanation of an Experiment on Tuning, in Reply 
to a Correspondent, By M. 
Sir, | ea till late in April that I had the pleasure 
of receiving your Number for the preceding month, other- 
wise I should have sent you the EMowing remarks at an 
earlier period, a fag ul ph le con 
If the author* of art. xxxii. will, uninfluenced by pas- 
sion, re-examine my letter on modes of tuning, (vol. xxxvii. 
p- 111), he will not discover any expressions to justify the 
charge of my having asserted the accuracy and success of a 
hasty experiment, there faithfully deséribed ; of my haying 
given any estimate of the power of ‘any description of 
monochord; nor of my haying made -a boast of any skill 
of my own: affer due consideration, it will therefore ap- 
pear that, instead” of opposing my assertions, instead of 
controverting opimions which 1 have stated, this discerning 
writer has, in the elegant article referred to, been combating 
the mere creatures of his own disturbed imagination. We 
at the conclusion of the experiment, were, ] think, as fully 
sensible as that very ingenious writer -mavy be, of its errors ; 
and I should have inserted a table of the differences between 
the scale of sounds produced and the system attempted, 
had I been disposed to waste your valuable pages on un- 
necessary schoolboy-calculation. ‘TI repeat, that with prac- 
tice, and by employing longer time, thé errors would be 
* I shall consider the Rev. C, J. Smyth to be the author, till 1 am better 
informed. Perhaps the person who could Write it, will not be ashamed 
to avow himsclf the author. 
less 5 
