Page:Transactions of the Geological Society, 1st series, vol. 4.djvu/457

 about 65°. Here are many rich veins of lead, which generally occur in large veins of quartz in sandstone. The schistus of this island, on the side opposite to Andros, is well calculated for slates; that opposite Miconi is very micaceous.

Dr. Traill presented to the Society some magnetic iron sand, mixed with much iserine, accompanied with a letter, of which the following is an extract.

“ I send you a bag filled with magnetic iron sand, mixed with much iserine, which I discovered more than two years ago in the hundred of Wirral, in Cheshire. It occurs on the shores of the Mersey, opposite to Liverpool, at Seacome Ferry. After heavy rains it oozes out of a deep bank of clay; but I strongly suspect that its matrix is the coarse reddish brown sandstone of the country, which, near Seacome, contains many quartzy nodules.”

In a subsequent letter (dated 26th October, 1816) Dr. Traill says, “ After the heavy rains of this summer, I have traced the magnetic iron sand and iserine for several miles along the coast. They are washed out of a bed of cohering sand that lies below the clay, and may be considered as entering largely into the Geological composition of that part of Cheshire.”

A Letter from the Rev. Archdeacon Barnes was read, dated Bombay, March 31, 1815. In this letter Mr. Barnes communicates, on the authority of Mr. Copeland, Assistant Surgeon to the European force in the Guzerat, some particulars relative to the carnelians of Cambay.

These are all procured from the neighbourhood of Broach, by