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When Neale turned out his Welsbach burner and rolled into bed, he encountered a strange, new sensation, an immense relief just to lay himself down, and to have darkness about him.

Describe the structure of an ordinary kerosene lamp-burner, an argand burner, a Welsbach burner.

If, for instance, our light is a Welsbach burner, giving an intense and comparatively white light, we will find that a normal negative will print too flat if exposed at one foot.

After it in strength comes the Welsbach burner, suitable for those having gas in the house.

This is the case in the familiar Welsbach burner.