The drift which consists of clay mixed with pebbles, cobblestones, and boulders, varies greatly in depth. In some places there is none, while at St. Paris, Ohio, it is 550 feet deep. It probably averages 100 feet thick or less. In your locality note the depth of the drifts in cuts made naturally by creeks and rivers or those made artificially for railroads. Oil-wells furnish evidence on this point. Collect a few good examples of scratched or glaciated pebbles or cobblestones which are abundant in the drift. These were scratched while frozen in the bottom of the glacier and pushed along on the bed-rock under the weight of the ice above. Collect ten different kinds of rock from the glacial boulders and drift,--there are more than one hundred kinds to be found,--and with the aid of some such book as "Rocks and Rock Minerals," by Louis V. Pirsson (John Wiley & Sons) or "Common Minerals and Rocks," by Wm. O. Crosby (D. C. Heath & Co.) try to identify them. All soil is composed of disintegrated or decayed rock. And it has been observed that the soil of northern North America is foreign to the bed-rock. Therefore it must have been transported from some other place. The glacier did this huge piece of work. The soil of southern United States contains no boulders or cobblestones and has been formed by the disintegration and decay of rocks in place. Observe glacial scratches and grooves on the bed-rock, those on Kelley's Island in Lake Erie are famous. Agassiz was the first to realize that it was a glacier that did this stupendous piece of work, and this conception or discovery greatly added to his fame. It is now easy for us to find the evidences and to enjoy their interpretation. In fact, the Greenland ice-sheet is a remnant of this prehistoric continental glacier. FOOTNOTES: [6] Muskrat fur is now also sold under its true name. [7] Unfortunately in the Southern States there is an entirely different animal commonly called a "Salamander" which is in reality a pocket-gopher of the group of mammals. SECTION XVI GIRL SCOUT'S OWN GARDEN BY DAVID M. HUNTER _A Garden is a lovesome thing, God wot! Rose plot Fringed pool, Fern'd grot-- The veriest school Of peace; and yet the fool Contends that God is not-- Not God! in gardens! when the eve is cool? Nay, but I have a sign; 'Tis very sure God walks in mine._ --_Thomas Edward Brown._