He summed these up in 1891 as follows: "All the tissues, in our view, are modifiers of the blood by means of an internal secretion taken from them by the venous blood.

In other words, the minutest tissue in the body is a source of heat in proportion to the activity of its chemical changes.

Outside of the eyeball, in the loose, fatty tissue of the orbit, in the upper and outer corner is the lacrymal or tear gland.

The thin and scanty tissue of his story is merely the light framework on which his florid wreaths are suspended; and while his imaginations go rambling and entangling themselves everywhere, like wild honeysuckles, all idea of sober reason, and plan, and consistency, is utterly forgotten, and is "strangled in their waste fertility."