212 Mr. Scoresby’s experiments and observations on the 
smart blows by the simple process, only acquired a lifting 
power of between 7-f and 18 grains ; whilst the same wire, 
after being softened and subjected to a similar treatment, 
lifted 32 6 grains And in the third set of experiments (IX, 
XII, and XIII,) the result was analogous. The untempered 
wire, by 5 blows on the simple process, lifted only 37 grains, 
and by the same number of blows on the compound process, 
73 ; whilst a similar wire tempered lifted, after exactly the 
same treatment, 186 grains by the simple process, and 265 
by the compound process. 
The same result was indeed always obtained in various 
other experiments, not included in the preceding details, yet 
there is one in the third series [(No. XV. (] which is apparently 
at variance with this conclusion. The difference of effect, 
however, (the untempered wire in this instance having re- 
ceived an equal power to that of the softened wire of a similar 
kind), was evidently owing to the employment of a very 
powerful apparatus, the large bar of which had become highly 
magnetic from long continued use in these experiments. 
Hence a greater action upon bars of harder temper was to 
be expected, conformable to what occurs with the use of a 
powerful apparatus in the ordinary modes of giving mag- 
netism to steel. 
The facility with which magnetism may be developed in 
softened wires by this process is very striking. The first 
five blows, in experiment No. II, by the simple process, pro- 
duced a lifting power of 73 grains, nearly one-half the weight 
of the wire ; — the first two blows, in experiment No. VII, also 
by the simple process, produced, in a long wire whose mag- 
netism had been totally destroyed by heating to redness, a 
lifting power of 186 grains ; and the first 5 blows, in ex- 
