88 Indian Mounds and Earthworks. 
ing to the different gasometers or other vessels between which 
the transfer is to be made ; and by means of the part EC the gas 
be made to pass in either direction at pleasure. 
1 ought to remark before closing, that previous to my applica- 
tion to Messrs. Brown & Francis, they had manufactured several 
air pumps of this description, with the exception of the tube G, 
which was added at my suggestion ; and which adapts it in a pe- 
culiar manner for use in a chemical laboratory. 
Messrs. Brown & Francis also manufacture a much smaller air 
pump, with a — barrel of the same construction. 
Art. VIII.— Notes respecting certain Indian Mounds and Earth- 
works, in the form of Animal E’figies, chiefly in the Wisconsin. 
Territory, U. S.; by Ricnarp C. Tayzor, Esq. 
Donixe the past year, whilst traversing, in the society of some 
friends, that portion of Wisconsin Territory which is 
bounded by Illinois to the south, and the beautiful Wisconsin 
River to the north, we frequently found our attention attracted 
by the singularly formed Indian mounds, of which the elevated 
prairies, as well as the rich valleys and the borders of the lakes 
and rivers of this region, afford such numerous specimens. 
The existence of abundant traces, apparently monumental, of 
an ancient and now probably extinct nation, within the country 
under our present recognizance, was known long ago to its early 
explorers, of which the French were doubtless the first, in the 
seventeenth century, and has been mentioned by some of the 
travellers who have subsequently written concerning this country. 
But I was unprepared to discover in the forms of these remains, 
whose origin is so obscure, other than the usual simple tumuli ; 
such as abound on the bordete of the Ohio, and throughout the 
great valley of the Mississippi, and upon the green plains and 
rich bottoms of the Missouri; which tumuli do closely resemble 
those which are so profusely scattered over the plains of Europe, 
and are especially abundant on the chalky downs of England. : 
Rumors of the remains of an ancient city, discovered within 
the past year, in the eastern part of this territory, wherein the 
ground plans of supposed buildings and fortifications may still be 
