My ninth is in learn, but not in teach;
My tenth is in sandy, but not in beach.
My whole is the name of a useful book,
As soon you'll see, if you'll closely look.
W.B.H.
DOUBLE WORD-SQUARE.
Across: 1. Departed. 2. Declare. 3. Look askance. 4. Terminates. Down: 1. High wind. 2. Part of a stove. 3. Want. 4. Mistakes.
H.H.D.