LIME AND CEMEiq"T INDUSTEIES 793 



t 



Silica 1.1 



Alumina ) ^ ^ 



Ferric oxid ) 



Lime carbonate 97.4 



Magnesium carbonate tr 



Insoluble 026 



It is reported tbat a Portland cement plant will be erected at 



tHs locality. 



Madison county^ 



Madison county bas limestones of JSTiagara and Lower Helder- 

 berg age and Quaternary marls. 



Tbe Magara limestone crosses tbe county as a narrow belt 

 from Bridgeport to near Oneida Castle^ tbe former locality be- 

 ing situated on its nortliern edge. Owing to tbe beavy covering 

 of drift, and tbe swampy cbaracter of tbe region in many places, 

 outcrops are scarce. It is, bowever, quarried at Oneida by 

 Mrs C. L. Faulkner and about IJ miles nortbeast of Canastota by 

 Stout Bros, on tbe Soutb Bay road. 



Tbe outcrops of Lower Helderberg limestone extend tbrougb 

 tbe central part of tbe county in a ratber sinuous belt, passing 

 soutb of Cbittenango and tbrougb Cbittenango Falls, Perryville, 

 Blakeslee, Cottons, Siloam, Stockbridge and Munnsville. Mate- 

 rial for lime-making is quarried at a number of tbese points. 



Cowaselon swamp is an extensive swampy area extending 

 from tbe nortliern edge of Canastota westward to tbe county 

 boundary. Owing to tbe ricbness of its soil, extensive ditcbes 

 bave been dug for draining tbe area, and in tbe excavation of 

 tbese mucb marl bas been exposed. One of tbe best sections 

 is along tbe Douglas ditcb and its feeders east and west of Onion- 

 town, 3 miles nortb of west from Canastota. Here at least 6 feet 

 of marl is exposed in tbe sides and bottom of tbis ditcb. On 

 F. PennocFs land west of Oniontown tbe marl is said to be 30 

 feet tbick. Tbe marl is covered by 3 feet to 4 feet of sand and 



1 Vanuxem, Lardner. Geol. Sd dist. N. Y. 1842. 



