RCP ne ST CET Ee ee ee 
3 tite 
3 
 gtructor and friend, adds, ‘I myself remember seeing during 
ee 
Charles Grafton Page. 3 
with all.” To this, Gen. H. K. Oliver, of Salem, his early in- 
Prof. Page’s residence here—at his office—a miniature railway, 
an elliptic curve of about twelve feet long and six wide, around 
which travelled a ms a magnetic engine drawing at high 
speed a miniature c 
The zeal and pe in the pursuit of electrical science and 
experiment, which marked especially these few years that he re- 
sided in Salem, after completing the study of his profession, 
are evidenced by his numerous contributions to this Journa 
about that time. He had much fertility of invention, and de- 
lighted in mechanical contrivances for the practical application 
and for the interesting illustration, of the laws of electric and 
electro-magnetic action. He was not only a skillful experi- 
menter, well versed in the theory of “seer but was also a 
ready and spirited writer, and his i lished papers must have 
contributed greatly to extend the kn owledge of, and excite an 
interest in, electrical science. The writer of this notice can ~ 
certainly testify to his own obligations to him in this respect. 
In the year 1836, he made a valuable series of experiments, 
published in the 3ist volume, Ist series of this Journal, upon 
the induction of — currents, following up the previous 
discoveries of Prof, Faraday and Prof. Henry on that subject. 
Prof. Henry (this J ournal, 1st series, vol. xxviii, P 328) had 
obtained sparks and shocks from the “ Calorimotor ” by means 
of the induction of the current upon itself in a long copper 
riband wound into a close flat spiral, after having been wrap- 
ped with an insulating covering. Prof. Page repeated and va- 
ried — serene sf a spiral riband an inch wide -_ 
220 feet long, and made the important step of augment 
intensity of the shock by rt of a soe Ber th oe on 
tery circuit in conjunction with a greater length of induction 
circuit, the induction circuit being, of course, in part or in 
whole exterior to the b battery circuit. Among ‘other forms of 
experiment detailed in the paper alluded to, “he obtained the 
shock from a part of the spiral entirely external to the part in 
ths battery circuit, which is in conformity with Faraday’s 
elementary observation of the induction of ‘a current upon a 
neighboring conductor, but he ascertained that the greatest 
shock was obtained, with that helix and the battery of a ‘sin- 
gle pair used, when the whole length of the spiral was in- S 
cluded in the induction circuit, and a fraction only of its 
length in the battery circuit. He did not offer any theory 
explanation of this result, but at this day, when the laws 
the voltaic cireuit have become not only known but : 
and since the laws of induction have become better alee 
