Note 183 — II. (continued 2)

In regard to the regular indentation of arrow-heads, I was informed by Mr. Debrant, then incidentally at Baughl's (on the 4th of September), that these were produced by contact with fire. Applying a glowing coal (the end of a burning stick) to the edge of the flint, and blowing on it steadily, after a few seconds a speck of the mineral will fly off, leaving a groove or indentation proportionate in size to the coal used and to the length of time applied. Thus, an arrow-head may be indented in a very short time, which would be impossible by chipping.