Note 1 — XIV NEW CONCEPTS FOR OLD

The balance of Dr. Royds’ essay is given to a discussion of the phenomena of Mercury’s perihelial advance, the deflection of light under the gravitational field of the sun, and the shift in spectral lines, in connection with which alone Einstein’s theory makes predictions which are sufficiently at variance with those of Newtonian science to be of value in checking up the theory observationally. In the interest of space conservation and in the presence of Dr. Pickering’s very complete discussion of these matters we omit Dr. Royds’ statement.—Editor. ↑