PHYSICAL anp LITERARY. 41 
does not appear red by a more copious 
reflettion of red than of other incident 
rays, but by the new emiflion of red rays 
' from the particular velocity of vibration 
‘which its elaftic parts are capable of con- 
ceiving by the impulfe of the incident 
light. 
33. IT is a fufficient AS of this 
fyftem, that no phaenomena proye or re- 
quire its exiftence:' Whereas Newton’s 
theory not only folves the phaenomena, but 
is directly drawn from a multitude of ex- 
periments. According to Fuler’s hypo- 
thefis,a body of one colour, placed in ho- 
mogeneous light of another, ought not to 
appear of the colour of the light, but ofa 
middle one between that and its own natu- 
al colour; which is contrary to experi- 
ence™. 
34. Ir it fhould be Et That none of 
the incident light is capable of qualifying 
the body for emitting its proper colour, 
but rays of the fame colour, that which 
he calls new light emitted will be, in his 
Vou. Il. F fcheme, 
* Newt, Opt, book 1. part 2. prop, 10. 
