The study of several specimens illustrated by both McGuire and West and the comparison of the fifteen figures presented in “The Stone Age” will acquaint readers with the distribution of forms and types. The striking thing in all this, and it may be verified by inspection of any large mound collection, is that the types shown in Figs. 435, 437, 439, and 465 are usually surface finds and may be distinguished from specimens found in mounds and from various village-sites. [Illustration: FIG. 447. (S. 1–1.) Handled disc pipe. H. P. Hamilton’s collection. ] [Illustration: FIG. 448. (S. 1–1.) Collection of Leslie W. Hills, Fort Wayne, Indiana. From Kosciusko County, Indiana. ] [Illustration: FIG. 449. (S. 2–5.) Straight-base monitor pipe, Logan collection, Beloit College. “It was ploughed up in an early day by Mr. L. Craigs, on Section 30, Eagle Township, Richland County, is of drab steatite and finely polished. It is 9 inches long, 2¾ inches wide at the base, 3 inches across the flange of the bowl, with the bowl cavity ¾ inch in its greatest diameter, and made with a tubular drill. This is certainly one of the finest examples of the straight-base monitor pipe as yet found in Wisconsin.” ] [Illustration: FIG. 450. (S. 1–1.) This figure shows the top view of pipe shown in Fig. 451, and is from the collection of Albert L. Addis, Albion, Indiana. Found in northern Indiana. ] Mr. West has kindly permitted me to reproduce portions of his valuable paper on pipes, and I am sorry that space is insufficient to quote his descriptions of the numerous figures he has loaned me. Referring again to the Siouan pipes (Fig. 437), it requires no skill to distinguish these modern forms from the more ancient. Many of the pipes shown in that figure will apply to other living tribes as well as the Sioux. [Illustration: FIG. 451. (S. 1–1.) Collection of A. L. Addis, Albion, Indiana. ] One may suppose that the tubular pipe soon developed into other forms. That is, of course, taking it for granted that the tubular pipe is the first form. Modifications of the tube tending toward the rectangular are often met with, which seems to bear out this theory. Be that as it may, we have in Fig. 438 a pipe from Dr. Whelpley’s collection, oval in outline, curiously ornamented with circular depressions, and which is hardly of the tubular class, but seems to be a modification of the same. Instead of being perforated through its long diameter, the bowl is about an inch from the broad end. Such a pipe as this is of rare occurrence.