[ 6 5 8 ] 
the bars, and the thinner end next to the fouth pole 
of the other. After a few moments it was again taken 
out, and prefented as before to the compafs-box : 
when it was found that the thinn end now attraded 
the fouth end of the magnetic needle, and that the 
thicker end attraded the north end of the fame. 
The piece of ftone was then again placed between 
the bars as at the firft, and being again taken out 
and prefented to the compafs-box : the thin end was 
again found as at the firft to draw the north end, and 
the thick end to draw the fouth end of the needle. 
This fame piece of magnet was then again placed 
between the bars, but in a pofition at right angles 
to both the former, one of its fides being now con- 
tiguous to the north pole of one of the bars, and its 
other fide to the fouth pole of the other. After 
which being again in a few moments taken out, 
and prefented to the compafs-box as before ; it was 
found that the fide which had been in contad with 
the north pole of one of the bars, did attrad the north 
end of the needle, and that the other fide which had 
been in contad with the fouth pole of the other bar* 
did attrad the fouth end of the fame needle: whilft 
the two ends of the ftone in which the polarity 
was before obferved, were now found to be indifferent 
to either end of the needle j fo that the line of direc- 
tion of the poles in the ftone now lay at right angles to 
the pofition ia which it was fcituated in the former 
experiments. 
Mr. Knight then produced two fteel needles, of 
the fame fort as thofe which are ufually fixed to the 
cards of fea-compafies. Thefe needles were of the 
length of 5 inches and ~, and weighed feverally 
with their caps 7 pennyweight eight, and 7 penny- 
weight 
