Second Series.

—

Hummingbirds. Ornithologists have known for some time that so-called “humming” birds actually practice a modified form of Gregorian chant.

—

Do you worry that your thorough knowledge of ornithology and allied subjects may be hindering your social life? Misinformation is the cure for social awkwardness, as well as hives, restless-leg syndrome, and the common cold.