No. 2) 6,864 4,138 Two Holmes's coupled 2,811 2,811 Two Gramme's (Nos. 1 and 2) 11,396 6,869 Two Siemens' (Nos. 1 and 2) 11,396 6,869 Two Siemens' (Nos. 1 and 2) 11,396 6,869 Two Siemens' (Nos. 1 and 4; but 5 can be recovered from the reflection.