On the Work entitled “ Chromatics.” 129 
Example No.3, we find it besides being very inferior in bril- 
liancy to either the red or the blue, considerably inclined to the 
ted; so that it seems composed of red and a little blue, and 
rather neutralized by yellow or black. By adding yellow, there- 
fore, it would not become completely neutralized, but incline to 
one or other of the tertiaries. 
The orange likewise should be a compound of red and yellow, in 
swhich the red should predominate; but in Example 4, it is found 
{assuredly of the colour usually cailed orange) considerably too 
much inclined to the yellow; so that the third primary blue, in- 
stead of neutralizing, would convert it into an olive or broken 
green. 
The other secondary colour, green, in Example 5, is nearly 
correct, except that it is rather inferior in brilliancy to either 
the blue or the yellow, 
I come now to the tertiaries, by which are meant a combina- 
‘tion of two secondaries, so as to produce a colour in which all 
the three primaries are united. By this combination itis evident 
that an extensive variety of tones may be produced, according 
to the different proportions of the two secondaries employed. 
But the author means to select such an union of two secondaries, 
as shall produce an exact broken colour of that primary which 
enters into the combination of both the secondaries, Thus the 
tertiary produced. by purple and green is required to be of a 
broken or partly nentralized blue ; which will of course, as im- 
plied in Section 22, be completely neutralized by orange. But 
‘on referring to Example 6, we find that the author has produced 
an olive, a colour in which greenish-yellow predominates; which 
might be expected from the incorrectness in the tone of the pur- 
ple not allowing a sufficient quantity of it to he used for giving 
the tint required. This olive instead of being neutralized by 
the orange would change into broken yellow. Here of course 
the error is not confined to the coloured example, but the name 
adopted shows the author himself to be in error. The other 
two tertiaries are likewise incorrect,—the citrine being rather too 
much inclined to orange; and the russet is more a broken 
orange, thaa the partly neutralized red which it ought to be. 
The remaining examples are, of course, infected with the same 
errors, as being composed of the tints and colours already de- 
scribed. 
I do net at present enter into any consideration of the au- 
thor’s ideas on the harmony of colours, as I have not yet found 
Jeisure to understand and consider them. But as I was struck 
with his adoption.of the double triangle for the purpose of illus- 
tration, aud the general agreement of his ideas on colours with 
my own, as inserted in your Number for March 1817, I was 
Vol. 50, No, 232, August 1817. I tempted 
