We have much need to distinguish century from century and decennium from decennium.
The decennium extending from 1550 to 1560 was the good period of Ivan IV.
These are the only monuments of early typography acknowledged to come within the present decennium.
One or two trifling works on Greek grammar were published by Croke during this decennium.
The second decennium still found him employed chiefly in research, vertebrate and extinct forms absorbing most of his attention.
He was occupied actively with teaching, but the dominant feature of the decennium was his assumption of the Darwinian doctrines.
In the following year and throughout the rest of the decennium the district had its usual low average of enteric-fever deaths.
The high rate of a decennium is not unfrequently brought up by one great explosion.
But with intellectual matters it is totally different; they change from century to century, nay, from decennium to decennium.