+-------+------------------------------+-------------------------------+
| | Ergs per Cubic Centimetre | Watts per lb. at a Frequency |
| | per Cycle. | of 100. |
|Maximum+-------+-------+-------+------+-------+-------+-------+-------+
| Flux | VII. | VIII. | IX. | X. | | | | |
|Density|Swedish| Forged| Ingot-| Soft | | | | |
| B. | Iron. |Scrap- | steel.| Iron | VII. | VIII. | IX. | X. |
| | | iron. | | Wire.| | | | |
+-------+-------+-------+-------+------+-------+-------+-------+-------+
| 2000 | 240 | 400 | 215 | 600 | 0.141 | 0.236 | 0.127 | 0.356 |
| 3000 | 520 | 790 | 430 | 1150 | 0.306 | 0.465 | 0.253 | 0.630 |
| 4000 | 830 | 1220 | 700 | 1780 | 0.490 | 0.720 | 0.410 | 1.050 |
| 5000 | 1190 | 1710 | 1000 | 2640 | 0.700 | 1.010 | 0.590 | 1.550 |
| 6000 | 1600 | 2260 | 1350 | 3360 | 0.940 | 1.330 | 0.790 | 1.980 |
| 7000 | 2020 | 2940 | 1730 | 4300 | 1.200 | 1.730 | 1.020 | 2.530 |
| 8000 | 2510 | 3710 | 2150 | 5300 | 1.480 | 2.180 | 1.270 | 3.120 |
| 9000 | 3050 | 4560 | 2620 | 6380 | 1.800 | 2.680 | 1.540 | 3.750 |
+-------+-------+-------+-------+------+-------+-------+-------+-------+
In Table VI. are given the results of a magnetic test of some
exceedingly good transformer-sheet rolled from Swedish iron.
TABLE VI.--_Hysteresis Loss in Strip of Transformer-plate rolled
Swedish Iron._
+------------+---------------------------+--------------------+
|Maximum Flux| Ergs per Cubic Centimetre | Watts per lb. at a |
|Density B. | per Cycle. | Frequency of 100. |
+------------+---------------------------+--------------------+
| 2000 | 220 | 0.129 |
| 3000 | 410 | 0.242 |
| 4000 | 640 | 0.376 |
| 5000 | 910 | 0.535 |
| 6000 | 1200 | 0.710 |
| 7000 | 1520 | 0.890 |
| 8000 | 1900 | 1.120 |
| 9000 | 2310 | 1.360 |
+------------+---------------------------+--------------------+
In Table VII. are given some values obtained by Fleming for the
hysteresis loss in the sample of cast iron, the permeability test of
which is recorded in Table IV.