53.8 



THE INTELLECTUAL RISE IN ELECTRICITY. 



fifteen or sixteen lines in height, while but two or three 

 of the non-electrified plants bad appeared above ground, 

 and even these had stems not more than three or four 



ABBE NOLLET'S EXPERIMENTS ON ELECTRIC LIGHT IN VACUUM 

 FI.ASKS. 1 



1 Reproduced in reduced fac simile from Nollet's Recherches sur les 

 Causes Particulieres des Phenome'nes Electriques. Paris, 1749. The 

 glass globe being set in rapid rotation is electrically excited by the pres- 

 sure of the hands against it, and the electrification passes from globe to 

 chain and thence to the conducting rods, and exhausted flasks. 



