valve gears, 128, 141; radial, 100, 

 102; shifting-link, 37; station- 

 ary-link, 37, 39; suspended- 

 link, 37, 128; Walschaert, 100 



valve stem, 39 



Van Loan. See Van Loon. 



Van Loon, William, 12, 22, 31 



Vigneols, Charles B., 47 



Vulcan Foundry (Tayleur & Com- 

 pany, Warrington, England), 

 100 



wagon-top boilers, 35, 36, 40, 107, 



109 

 Walschaert valve gear, 100 



Western Star, 7 



Wm. AicCammon, 126 



W. S. Walter son, 35 



wheels: adhesion, 47; driving, 53; 

 gripper, 53 ; wrought-iron driv- 

 ing, 79 



Whetstone, John L., 23, 58, 61, 62, 

 76, 93, 100, 105, 135, 138, 139 



Wilmarth. Seth, 105 



Winans, Ross, 36, 105 



Wolff, Daniel, 121, 122 



W'oodward, Jabez M., 62 



Yeatman and Shield, 22 

 Tuma, 44 



167 



U.S. GOVERNMENT PRINTING 0FFICE:I965 



