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. 



Wt. of brk. in lbs 



Dimensions 



Cubical contents 



Area strained ... 



Height of column 



Total stress 



First crack 



Splinters fly 



Crushed 



Stress per square inch 



First crack 



Splinters fly 



Crushed 



Color of brick 



Fracture 

 Position of 1st fracture 

 Direction of fracture . . 

 Kind of brick 



Sp.gr 



Wt. per cu. ft 



4.86 



61.35 cu. in. 

 16.95 sq. in. 



3# 



208000 

 250000 

 254000 



12230 

 14800 

 14990 

 Lt. cream 

 Homogen. 

 columnar. 



One corner 

 Vertical . . 

 Repressed 



2.18 

 136.9 



5.14 



8x31x2^5^- 

 70.7 

 18.5 



84000 



172000 



4580 



9300 

 Lt. cream 

 Blaek vit- 

 rified. 



Central . . 

 Diagonal . 

 Common . 



2.01 

 125.6 



No. 3. 



5.1 



74. 

 18.5 

 4. 



56000 

 133000 

 180000 



3508 

 8362 

 10909 

 Lt. cream 

 Homogen- 

 eous. 



Central . . 

 Vertical . . 

 Common . 



1.91 

 118.8 



No. 4. 



5.00 



7|x3|x2t§^ 



67.20 



17.92 



31- 



48000 

 108000 

 141200 



2600 

 6000 

 7880 

 Lt. cream 

 Homogen- 

 eous. 



At one end. 



Vertical. 



Common T. 



of soil. 



2.07 



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 Cortlandt. 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 and the Ogden Brick Co. Their clay beds 

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



