W. &. Morse—New form of Magneto-electric Engine. 387 
magnet, we diminish the lifting power of these individual lim- 
its by the employment of an armature, as the following results 
show : 
Weight lifted without armature. Weight lifted with armature on. 
249 160 
300 180 
In the preceding experiments the straight iron bars formin 
the armatures were carefully deprived of whatever residua 
magnetism they might possess. 
xperiments were next tried upon the effect of horseshoe 
electro-magnets used as armatures to electro-magnets of the 
1 
were opposed, and the magnetic circuit closed, the strength of 
the currents obtained both on the application and the removal of 
the armature were very marked, as the following results show: 
At contact of N. and 8. poles. On removal of N. and §. poles. 
+360 — 359 
+362 — 360 
+361 —361 
When the horseshoe magnet forming the armature was not 
used, and one of the limbs of the stationary electro-magnet 
was quickly slipped in and out of the induction coil, induction 
currents were obtained, the values of which are shown below: 
Placed in. Withdrawn, 
40 —40 
+40 — 40 
0 
n these experiments the stationary electro-magnet and the 
electro-magnetic armature were of the same size and the same 
magnetic strength. 
Xperiments were next made upon the influence of the mass 
of the iron forming the armature. This was found not to have 
so much influence as the residual magnetism of the iron. The 
results were very contradictory, as the following table shows: 
Weight of armature. Deflection produced. 
364 grams. 280 
341 330 
222 290 
137 280 
132 290 
67 310 
Weare led to believe that the mass of the iron does not 
affect the results when it exceeds that of the stationary electro- 
magnet. 
