The crossword solutions for the term CONTENTS OF SOME WELLS are OIL and INK. OIL is a naturally occurring, yellow-to-black liquid found in geological formations beneath the Earth's surface. It is a fossil fuel which consists of a complex mixture of hydrocarbons of various molecular weights, plus other organic compounds. INK is a liquid or paste that contains pigments or dyes and is used to color a surface to produce an image, text, or design. It is used for writing, drawing, and printing.