Note 11 — PART I. (continued 2)

I learned of this cave from Mr. Eugene F. McCabe, of Renovo, Pennsylvania. Mr. McCabe took out large pieces of ice from it in the month of August. On December 23d, 1896, he found no ice inside the cave, but a hoar frost covered the rocks; the temperature outside was -5.6°; inside -4.5°: the day was clear and there was no breeze; several matches lighted in the cave were almost instantly blown out by a current of air coming from crevices in the rocks.

Mr. Ira C. Chatham, postmaster at Farrandsville, wrote to me on the 19th of October, 1898, as follows: “Your paper on Ice Caves [Journal of the Franklin Institute, March, 1897] at pp. 177 and 178 describes the Farrandsville Cave as near as is possible, as the ice forms in the spring from the snow melting and dropping through the rocks into the cave, and the rocks face directly north as stated.”