INDEX. 627
Testing Machines—- PAGE.
The necessity of and care in using..................... 481
Advisability of a uniform speed in operating........481, 577
Plan for delicately operating hand.................... 482
Thermal Tests—
The value of manganese to assist iron to withstand.... 271 Methods of applying to car wheels................443, 444
Titanium-Nature of its effects in iron........................31, 218
To whom credit is due for making the A. F. A. tests .......................................540, 542, 555