Note 3 — Front matter
Russell Codman translation
Big strides, however, have been made lately in overcoming these shortcomings, and it would appear that the principle of sound-detection is the most hopeful one for us to follow.
Russell Codman translation
Big strides, however, have been made lately in overcoming these shortcomings, and it would appear that the principle of sound-detection is the most hopeful one for us to follow.