The Grove, Hammer smith , June 1832.

A comparison of Mr Scarths statement above, with that of Mr Drosier will show that the stormy petrel incubates in apparently very distinct situations.

Mr Scarth found the nest (" which was very simple, being little more than a few fragments of shells laid on the bare turf") on a peat moss, near the shore (of a small uninhabited island in Orkney).

Mr Drosier found the nest of this species, Pro- cellaria pelagica (as well as that of the Manks puffin, Pro- cellaria Piiffinus, ) in the fissures, high up, of " one of the most magnificent and stupendous cliffs, or faces of rock, estimated to be about 1500 feet above the level of the sea" he had ever beheld: this was on the southern side of the Island of Foula.

For Mr Drosiers clear contradistihctive description of the eggs and nests of these two species (which he found in the same situation), see.