^{page 15 note 2} I examined it in 1893.

^{page 16 note 1} I was there for some time last summer, and had already paid four short visits.

^{page 16 note 2} It is a few inches over 6,000 feet.

^{page 18 note 1} Professor Forel has kindly informed me that it is 2,000 mètres long, 500 mètres wide, and 60 mètresingreatest depth. I am indebted to him for the measurements of Lago Cadagno and Tom.

^{page 18 note 2} They belong to the group which for purposes of reference I have called the Upper Schist. They are described, as well as the geology of the Val Piora, in the Quart. Journ. Geol. Soe., xlvi (1890), p. 199, etc.Google Scholar

^{page 19 note 1} Its area is given as 1,000 square métres, and it is said to be shallow. But I should think it would not be less than some 20 feet deep, and might be more.

^{page 19 note 2} The only sign of disturbance in the lake itself, several yards away from the shore, was clearly an upward flow, i.e. was produced by a strong spring in the bed of the lake.

^{page 19 note 3} I twice examined the surface of the water; on the second occasion (a very still day) I thought I detected a slight movement in some scum on the water.

^{page 19 note 4} Kauehwacke often has a shattered, almost rubbly aspect.

^{page 21 note 1} The slope, above Fiesso, begins of course just below the Lago Treniorgio, or nearly at 6,000 feet.

^{page 21 note 2} No doubt this has been subsequently cut down below the original level, the valley being a large one; the Val Canaria has been cut yet lower.

^{page 21 note 8} I believe I know of others than those mentioned in this paper, but, as I have not examined them since Mr. Marr's paper was published, will not refer to them.