BUILDING STONE. 
207 
of Manitowoc, is found here in several localities, but they are 
deep in the great woods which still cover that county, and 
have attracted no attention. I have found it in some instances 
elegantly clouded, and susceptible of a very fine polish,—the 
ground nearly pure white, and the clouding a delicate blue. A 
bed of Lithographic stone extends through this county, com¬ 
mencing on Mr. D. M. Aldrich’s, before mentioned, and ma¬ 
king numerous outcrops through Kewaunee and Door Counties. 
It is last seen near the Door, where Mr. Geo. H. Wood, of 
Green Bay, has opened an extensive quarry. In some cases, 
this stone is sufficiently free from seams to supply slabs of 
considerable size, and its texture is sufficiently fine to adapt it 
to Lithographic uses. Both Door and Kewaunee Counties are 
supplied with excellent stone, which will no doubt eventually 
be largely transported, on account of the easy accessibility of 
their quarries by water. These counties contain probably more 
good building stone than half the rest of the State. Their rapid 
growth in population will soon require towns of more substan¬ 
tial material than wood, and the clearing away of the forest 
will open up vast sources of wealth in these marbles and 
limestones. 
FOND DU LAC AND VICINITY. 
The heavy ledge of Niagara limestone, which passes east of 
Fond Du Lac, furnishes exhaustless stores of good stone. The 
lime manufactured there is equal to any in the State. The 
strata at the base of the bluff might be profitably used for 
hydraulic lime. The irregular texture and frequency of cavi¬ 
ties and joints in this stone renders it unfit for nice dressing, 
but stone for all ordinary purposes can always be cheaply 
procured. About seven miles south of the city, on Section 10, 
Byron Township, the flag beds appear on the surface, present¬ 
ing very similar characters to those already noticed at Wau¬ 
kesha. They are quarried extensively at Mr. S. Sylvester’s 
place. These strata are thin, even, compact, bluer than at 
Waukesha, the surfaces roughened by small, oval depressions, 
free from flints and fossils, and unsurpassed in their adaptation 
