32 
STATE AGRICULTURAL SOCIETY. 
VARIOUS OTHER ECONOMIC MATERIALS. 
Of these there is a large variety, but owing to the limita¬ 
tion of the geographical surveys hitherto made, to the metal¬ 
liferous formations and deposits of the State, our means of 
information are few and partial. 
The Building Stones of Wisconsin , are so fully discussed in 
a paper communicated by Prof. E. Daniels, and herewith pre¬ 
sented for publication, that a detailed consideration of them in 
t 
this connection is rendered unnecessary. They are widely 
distributed, so that almost every county and town has its 
available quarries. Marbles of various kinds are likewise found 
in the State. Some of them are beginning to attract attention 
and are likely to prove valuable. Certain quarries on the 
Menomonee and Michigamig rivers are spoken of in high terms 
in the report of Messrs. Foster and Whitney, U. S. Geologists, as 
affording beautiful varieties, w T hose prevailing color is light 
pink, traversed by veins or seams of deep red; while others 
are blue and dove-colored, beautifully veiled, all susceptible 
of a high polish. 
Gypsum has been found in the sand rock on Lake Superior, 
along the eastern shore of Green Bay, and at several other 
places, though the evidences are not very conclusive that it 
occurs anywhere within our borders in very considerable 
quantities. 
Clay of superior quality for making brick, and of fair qual¬ 
ity for pottery ware, is found in numerous localities. The 
famous “ Milwaukee Brick/ 5 remarkable for their beautiful 
cream color, and wdiich, on this account, have been extensively 
imported into eastern cities, is made from a fine clay which 
abounds not only in the vicinity of Milwaukee, but also along 
the shore of the lake as far north as Manitowoc, and at many 
places in the interior. Watertown, Whitewater, Stoughton, 
Portage, Ozaukee, Manitowoc, West Bend, and various other 
towns, use it almost exclusively in the manufecture of brick. 
The number made annually at Milwaukee is scarcely less than 
twenty millions, with a valuation of about §120,000. 
Just what it is that occasions this peculiar and popular color 
