No possible listener was allowed to escape.
Further to promote this campaign of publicity, Hubbard encouraged Bell and Watson to perform a series of sensational feats with the telephone.
A telegraph wire between New York and Boston was borrowed for half an hour, and in the presence of Sir William Thomson, Bell sent a tune over the two-hundred-and-fifty-mile line.

"Can you hear ?" he asked the operator at the New York end.

"Elegantly," responded the operator.

"What tune ?" asked Bell.

"Yankee Doodle," came the answer.