30 
of the pupils, of course, can ever have heard a human sound, 
and all their knowledge and practice in speaking must come 
from their imitation of the visible mechanical movement of 
the lips, and other organs of enunciation by their teachers, 
who are all Castilians, yet each speaks clearly and decidedly, 
and with the accent of the province from which he comes, 
so that I could instantly distinguish the Catalonians and 
Biscayans and Castilians, whilst others more practised in 
Spanish felt the Malagan and Andalusian tones.” — (“Life 
and Journals of George Ticknor.” London, 1876, Yol. I., 
p. 196). A similar case has been mentioned to me by Mr. 
J. J. Alley of Manchester. E. R became deaf and dumb at 
a very early age, and did not talk until he was about seven- 
teen, when he was taught articulation by Mr. Alley. He 
speaks with the accent of his native county of Stafford. 
These instances are cited in my paper on the Education 
of the Deaf and Dumb, in the Companion to the Almanac 
for 1880. 
“On Professor C. A. Bjerkness’s Experiments to Demon- 
strate the Analogies between Electrical and Magnetical 
Phenomena and some Hydrodynamical Phenomena,” by 
William H. Johnson, B.Sc. 
Among the many interesting exhibits at the Paris 
Electrical Exhibition, there is nothing more likely to 
engage the attention of the scientific observer than the 
simple apparatus and experiments of Professor Bjerkness, of 
the University of Christiania. 
The apparatus consists in the main of metal spheres about 
one inch in diameter, and drums also an inch in diameter 
with indiarubber ends. These spheres and drums communi- 
cate by means of indiarubber tubes with a pair of air-pumps, 
which, by an ingenious contrivance, cause the spheres to 
oscillate and the drums to pulsate isochronously. If the two 
air-pump pistons go in and out at the same time, the spheres 
