10' 35" each day, will be four times as distant from her zenith point--i.e., by 52 deg.

42' 20", a space which corresponds to the distance she will travel during the transit of the projectile.

But as the deviation which the rotatory movement of the earth will impart to the shock must also be taken into account, and as the projectile cannot reach the moon until after a deviation equal to sixteen radii of the earth, which, calculated upon the moon's orbit, is equal to about 11 deg., it is necessary to add these 11 deg.

to those caused by the already-mentioned delay of the moon, or, in round numbers, 64 deg..

Thus, at the moment of firing, the visual radius applied to the moon will describe with the vertical line of the place an angle of 64 deg..
"Such are the answers to the questions proposed to the Observatory of Cambridge by the members of the Gun Club.
"To sum up-- "1st.