Sentence Examples with the word timber line

As one advances northward the timber grows smaller and includes fewer species of trees, and finally the timber line is reached, near Churchill on the west coast of Hudson Bay and somewhat farther south on the Labrador side.

As a rule, the elevation of the timber line on the mountains increases as the latitude decreases.

The smallest of the birds, the ruby throat humming-bird, is found everywhere, even up to timber line in the mountains.