Dr. ingen housz’s Method 
34 ° 
juft to make it fink. I placed a point under it, fo that the 
needle with the cork was kept a little below the furface 
of the water, bearing upon the point with a very incon- 
fiderable weight. This anfwered nearly as in exp. n. 
exp. iv. I fixed to the center of a final], but ftrong, 
magnetical needle a filver wire; to the other extremity 
of this wire I fixed a fmall fteel-working needle, very 
much hardened. I ftuck the point of this working 
needle to the lower extremity of a fteel magnet, placed 
in a vertical pofition and highly polifhed. This whole 
apparatus was placed in a glafs cylindrical veffel, filled 
with water fo far as to cover the point of the working 
needle. The horizontal magnetical needle, thus fuf- 
pended, was remarkably quick in directing itfelf into the 
magnetical meridian, and w'as very eafily difplaced out of 
its direction by the approach of a magnet at a confider- 
able diftance. 
The greateft difficulty I found in this contrivance was, 
that a little jerk fhook the point of the working needle 
from the vertical magnet; and that a heavy magnet 
could not be fufpended from the point of a working 
needle, but required a tolerably good magnet rounded at 
its extremity, where it was fufpended from the vertical 
magnet, or a thick piece of iron rounded in the fame 
manner, by which means, however, the horizontal 
magnet 
