the old sulphur chambers 142 were still existent and that entrance to them could be gained by means of a rope or a rope ladder. The rumbling within the chambers is strong and a large volume of steam issues from them, but no tem- perature observations could be made or gases collected. To the senses there seemed to somewhat less strength of discharge than at the times of my visits in 1903 and 1908. The Cratere du Nord lies in the Grande Fente, ? yards south of the Lac de Soufre. It now has three principal openings, which are arranged along a line running N 50° W - S 50° E