The slates used belonged to the Medium, and were, as she told them, in daily, almost hourly use; the frame of one of them was far from sound, and the hole which admitted the screw was more than well worn.

I shall confine myself now to proofs that slate is hardened mud, and to hints as to how it assumed its present form.

Slate is a marvellous fellow, and I think he has gathered up every loose end.

Slate, quartz, schist, granite, and trap are the principal rocks, and by their decomposition do not produce a soil favourable to vegetation, the country becoming more desolate as we advanced.

Mr. Slate was a tiny, careful, smoothly-earnest man, consistent and faithful as a minister, made more for quiet sincere work than dashing labour or dazzling performance;

But my clean slate is a great deal thanks to you.

Professor Rogers, again, points out that as these slates may have been highly heated, thermal electricity (i.e. electricity brought out by heat) may have acted on them.

"Slates are stone and used to cover roofs of houses.

"Slates are thin plates of stone, and are often used to cover the roofs of houses.

The slate was a small double slate, joined together with hinges, about 10 inches by 12 inches in dimension.