4 o*> XV. Hulme's Experiments and Observations 
was blown upon for some time with a pair of bellows; but I 
could not perceive that this had any effect on the light, so as to 
render it more vivid. 
Exper. g. A small piece of shining wood was tied upon one 
of the corks of the apparatus, and introduced above water, where 
it continued lucid until the fifth night. In another experiment, 
the light was extinguished on the fourth night ; and in a third 
much sooner. 
Exper. 10. A living glow-worm, m a shining state, was 
submitted to the action of a pair of bellows ; but the con- 
tinuance of the blast did not apparently increase its glowing 
quality. 
Exper. 11. A very luminous dead glow-worm was fixed upon 
a cork of the apparatus, by means of a small pin, and then put 
into the phial, above water. It continued to shine as vividly as 
it did when in the open air, forming a pure white light, of a 
circular shape. 
OBSERVATIONS. 
Obs. i. These experiments prove, that objects which abound 
with spontaneous light in a latent state, such as the herring, 
mackerel, and the like,' do not emit it when deprived of life, ex- 
cept from such parts as have been some time in contact with 
the air. 
Obs. 2. They likewise show, that the blast of a pair of bellows 
does not increase this species of light, as it does that which pro- 
ceeds from combustion. 
