270 
THE QUANTUM 
Smith, H. J., 227 
Sommerfeld, 9, 10, 13, 15, 21, 25, 26, 
56, 58, 60-8, 75, 78, 81, 83, 84, 
85, 98, 99, 101, 104, 118, 175- 
80, 199, 209-15, 218, 256, 259 
Stark, 10, 165, 180 
Stern, 13, 83, 86-8, 169 
Stewart, 107 
Stoner, 13, 77, 78, 80, 91, 101, 102, 
104, 108, 185, 195, 197, 199, 
200, 214, 256 
Stoney, Johnstone, 29, 47 
Struik, 240 
Lo Surdo, 10, 180 
Swann, 198 
Sylvester, 227 
Tamm, 98 
Taylor, 196 
Taylor, J. B., 89 
Taylor, N. W., 104 
Thirring, 153 
Thomas, L. H., 220 
Thomson, G. P., 196, 202 
Thomson, J. J., 30, 31, 41, 69, 73, 
74, 122, 125, 126, 131, 186, 187, 
190, 191, 243, 249 
Thomsen, Julius, 76 
Trautz, 7 
Trkal, 26 
Turnbull, 227 
Uhlenbeck, 13, 168, 240 
Uhlenbeck and Goudsmit, 217-22 
Urey, 218 
Vaidyanathaswamy, 228 
Van Vleck, 26, 27, 98, 225, 256 
Voigt, 35, 38, 106, 216 
Van der Waals, 169 
Wagner, 176 
Watkins, 116 
Watson, W. H„ 183 
Weber, 32-5, 105 
Weiss, 35-8, 95, 96, 102 
Weiss and Cotton, 208 
Wentzel, 79 
Weyssenhoff, 96 
Whetham, 187 
Whitehead, 16, 252 
Whittaker, E. T., 20, 27, 40, 109-20, 
127, 155-9, 160, 161, 170, 182" 
188-9, 191-3. !94> 240, 247, 248 
Whittaker and Watson, 236 
Whittaker, J. M., 193 
Wien, 258 
Wiener and Struik, 240 
Williams, E. H., 104 
Wills and Hector, 93 
Wilson, C. T. R., 192, 245 
Wilson, W., 9, 21, 22, 25, 60, 118, 
135, 209, 259 
Wollaston, 47 
Wood and Ellett, 200 
Woodward, Ida, 126 
Yeh, 176, 177 
Young, 185 
Zeeman, 50, 204-15