Urinator imber. Lake Umbagog, Maine. Singular call 1896. Two years ago this month Will Sargent and I heard, one Sept.11. morning, a call new to us both and paddling out into the dense fog came upon two Loons playing together near the Outlet and making the sound in question. I have not heard it since until this morning when for nearly half an hour before the wind rose it came at short intervals from the direction of the Outlet where, with the aid of a glass, I could see two Loons swimming about on the calm water. I do not remember just how I ren- dered it in 1894 but today I set it down as varying from a rather deep and hollow hoo to an abrupt oh. It is very human in tone and might be easily mistaken for the call or ejacula- tion of a man. It was repeated twice or thrice in quick suc- cession as a rule but sometimes was given only once.