nitrogenous wastes

He and his wife, Sophie, are off to tour the frozen wastes of Arctic  Canada, and no-one's paying any attention.

The child who has got languages from its governess, therefore, marks time—that is to say, wastes time in these subjects at school.

Deppe gives me the most beautiful music, and never wastes time over things which will be of no use to me afterward.

Its chemical composition is unknown, but it is nitrogenous, and is believed to be produced by the decomposition of gluten.

What is true of the nitrogenous matters applies with still greater force to the mineral constituents of the manure.

When the food is rich in nitrogenous compounds, the value of the manure is considerably increased.