The lungs, which are never expanded by air, are destined to the sole purpose of oxidizing the blood.

On the walls are bracketed oxidized silver lamps of Roman design, and there are frequent illuminated texts from the Bible and from Mrs. Eddy's SCIENCE AND HEALTH WITH KEY TO THE SCRIPTURES impaneled.

The geologists were interested, and we others learnt something of olivines, green in crystal form or oxidized to bright red, granites or granulites or quartzites, hornblende and feldspars, ferrous and ferric oxides of lava acid, basic, plutonic, igneous, eruptiveschists, basalts &c. All such things I must get clearer in my mind.

There must be air present to oxidize the resulting products. 4th.