BRICK YARDS 



211 



pose of paving. The sides were dressed to parallel planes on an 

 emery wheel, so as to get uniform bearing over every part. 

 Single layers of thick paper were placed between the brick and 

 the machine. 





No. 1. 



No. 2. 



No. 3. 



No. 4. 



Wt. of brk. in lbs 





5.14 



5.1 



5.00 



Dimensions 



7fx3#x2X 



8x3lx2-A 



8x4x2A 







61.35 cu. in. 



70.7 



74. 



67.20 





16.95 sq. in. 



18.5 



18.5 



17.92 





n 





4. 



3f 



Total stress 













208000 



84000 



56000 



48000 





250000 



.... • . • 



133000 



108000 





254000 



172000 



180000 



141200 



Stress per square inch 













12230 



4580 



3508 



2600 





14800 





8U32 



6000 





14990 



9300 



10909 



7880 



Color of brick 



Lt. cream 



Lt. cream 



Lt. cream 



Lt. cream 





Homogen. 



Black vit- 



Homogen- 



Homogen- 





columnar. 



rified. 



eous. 



eous. 



Fracture 











Position of 1st fracture 



One corner 



Central . . 



Central . . 



At one end. 



Direction of fracture . . 



Vertical . . 



Diagonal . 



Vertical . . 



Vertical. 





Repressed 



Common . 



Common . 



Com nonT. 









of soil. 



Sp.gr 



2.18 



2.01 



1.91 



2.07 





136.9 



125.6 



118.8 



129.0 



The repressed brick shows great strength ; more than sandstone 

 and four fifths that of granite. The best results of pressed brick 

 usually show 6000 to 10,000 pounds per square inch. 



Homer, Cortland Co. The brick yard at this locality belongs 

 to Horace Hall of Cortland t. His clay bed underlies the flat 

 lands near the village of Homer, and is from three to five feet 

 thick. Quicksand underlies the clay and overlying it is a dark 

 soil two to six inches thick. The clay is of a bluish color. 



Binghamton, Broome Co. There are two yards at this town, 

 viz. : Wells & Brigham arid the Ogden Brick Co. Their clay beds 

 are similar, both being shallow deposits six to eight feet thick, 



