124 
Captain Kater on the best kind of steel 
Experiment 32. 
Directive 
force. 
Small parallelogram 
Large parallelogram - 
* 1 
1158 
126l 
Magnets forming with the needle an angle of two or three 
degrees, their other extremities being connected by a very 
soft iron wire. 
Experiment 33. 
Directive 
force. 
Small parallelogram 
Large parallelogram 
1145 
12 6 1 
The iron wire was now removed and the needle magnet- 
ized, as before, at an angle of about two or three degrees. 
Experiment 34. 
Directive 
force. 
Small parallelogram 
Large parallelogram - 
1 l6o 
1273 
I now hardened both the needles throughout at a bright 
red, and then softened them from the middle to within three 
quarters of an inch of the ends till the blue had disappeared. 
This was done by laying the large parallelogram on a red 
