r82 



NEW YORK STATE MUSEUM 



Monroe avenue. 4.226 miles; 8200 yards of Lockport dolomite, in part 

 boulders and in part from the bed of West branch of Allen creek, Pittsford; 

 contractors, Whitmore, Rauber & Vicinus, Rochester. 



Webster road, section 1. 1.576 miles; 3450 yards of Lockport dolomite 

 from Foefy & Kastner's quarry, Goodman street, Rochester; contractor, 

 Horace M. Cowles, Rochester. 



"Webster road, section 2. 2.96 miles; limestone from fields on what is known 

 as Atlantic avenue, road east of the Irondequoit creek and in the vicinity of 

 the Black Oak tavern; contractor. F. A. Brotsch, Rochester. 



Webster road, section 3. 3.398 miles; for foundation, 5000 yards of 

 macadam made from field stone, for top, 2500 yards of granite boulders; con- 

 tractor, Henry L. Smith, Long Island City. 



Webster road, section 4. 2.879 miles; will use 4200 yards of macadam 

 made from limestone boulders; 2100 yards from granite boulders. 



Clay industry 



The clay industry of the county is entirely centered in and 

 about Kochester. The supply of clay used, excepting some 

 imported from outside the State for pottery and sewer pipe 

 manufacture, is obtained from an area of country about 10 

 miles in breadth and with a greatest length from north to south 

 of about 7 miles, its northern edge abutting the Pinnacle range. 

 The deposit lies in the towns of Brighton, Henrietta and Chili. 

 The clay is of Quaternary age and was formed as a fine sedi- 

 ment at the bottom of the glacial waters ponded against the 

 ice front at the time of the formation of the Pinnacle range. 

 Though generally red, it varies somewhat in color, being in some 

 places yellowish or limonitic. 



Its distribution is irregular, its depth running from nothing 

 to 10 or 12 feet. The average thickness at the various places 

 where it is worked is something under 4 feet. It may be thick 

 or thin on a knoll; in some cases it is covered by sand, in others 

 it underlies gravelly knolls. Some of that along Black creek 

 may be connected with the history of that stream. The beds in 

 its vicinity are underlain by quicksand. At other points it is 

 usually underlain by hard pan or argillaceous gravel. At 

 points in the clay, boulders are found in heaps or ridges of small 

 size known as " hogbacks." 



The clay is worked in two regions; one 3 miles east of the 

 Genesee and the other a short distance west. 



