Stock Exchange yesterday. BF&M was the only other mover, dropping by $1 to $9 on volume of 466.

Trading unchanged were: Bank of Butterfield, which closed at $30, with volume of 678; Belco, $19.75, 2,300; and Telco, $395 , 715.

The Exchange Index closed at 1,159.48 -- down by 13.81.