24 The Saginaw Valley Collection 
evidently intended for specialization; Fourth, a few of the latter 
specialized by notching. Objects made of the same material are 
only rarely found in the region, hence these were probably 
brought from a distance. A cache, a few feet from the preced- 
ing, consisted of one large, black, leaf-shaped implement, similar 
to those of the last mentioned and surrounded, it is said, by 
thirteen rubbed stones. 
The foregoing description contains but a general indication of 
the archeology of the Saginaw valley, as outlined by a single 
collection. Those who care to pursue the inquiry further are re- 
ferred to the more detailed descriptions published in the Amerz- 
can Anthropologist, though even these are not supposed to ex- 
haust the theme presented by this limited area alone. Thorough 
explorations in the mounds, graves and village sites are neces- 
sary to supplement what is now known from the surface evidence 
and from the few explorations which have been made beneath 
the surface. 
Of the archeology of many other parts of Michigan still less is 
known, and it is of the greatest importance that thorough work 
should be done in several centres of culture, not only in the 
Saginaw valley, but also in other parts of Michigan and in fact 
throughout the Central States, in order to solve the enigmas that 
have long puzzled the students of the early Americans. The 
Mississippi and St. Lawrence valleys are rich in archeological 
material, but it is almost useless to indulge in speculations de- 
rived from scattered bits of evidence from widely separated parts 
of the country. The time has come when our studies must be 
based upon exhaustive and detailed investigations made in a 
scientific manner, at one place. These may then be compared 
with the results of similar studies carried on at all other parts of 
the region of which knowledge is desired and substantial prog- 
ress will be made toward unraveling the history of the early 
Indian tribes in this country. 
