12 * W. B. Rogers on Sonorous Flames. 
positive evidence of the vibratory movement of jets of air 
flowing through small apertures. As these important results 
appear to saab escaped the attention of Prof. LeConte and other 
late writers on sonorous flames, a particular reference to them 
ry be teal in this place. 
elix Savart, as is well known, demonstrated the existence of 
vibrations in liquid jets, traced them to their source near or at 
the aperture, and showed that they were not only susceptible of 
= variously modified by tones of proper pitch sounded near 
but were capable under certain conditions of emitting of 
sbeinebind distinct musical sounds. He did not however stop 
3 here, but in the — of M. Masson, “including all fluids in a 
eral theo attem to reproduce with gases the beautiful 
phenomena which ant demonstrated i in regard to liquid jets.” 
ah ee several experi- 
excellent Draite 
succession of enlargements and contractions i its course similar to 
those seen in a jet of water. 
_ These conclusions have since been confirmed and extended by 
, who, from an elaborate series of experiments, 
demonstra 
rimaril 
© Gaundat te oe aan 
Sccond-—The scat vf oe cea is pee by the sono- 
rous tube when the tone of latter is exactly or nearly an 
harmonic of that of the ares so that the same mode of ae 28 
anne other results bearing upon the present Sgr ae 
rimentalist states the important fact, that the vibra- 
ope oc ee ont orifice and those of the aii ot. mt - 
: cpr se other so am, alto fs hse 
parts of the although t ape 
sounds. 
