ROUND ISLAND PARK.

This Association was formed under the same general act as the preceding, by articles signed August 30, 1879, and filed the same day with the County Clerk, and with the Secretary of State, September 6th. Capital $50,000; shares $100, and number of Trustees, 5. The corporators and first Trustees were John G. Harbottle, Charles A. Waterman, George L. Davis, John F. Moffett, all of Watertown, and Ambrose E. Sawyer, of Carthage.

The Island includes about 175 acres, and has been laid out into about 400 lots, besides avenues, ornamental parks, pic-nic grounds, etc. The principal avenues have been graded, and a dock built, 260 feet long, with 14 feet depth of water in front, allowing the largest Steamers to approach. A hotel is in course of erection, 50 by 200 feet on the ground, and four stories high, with accommodations for above 400 guests. The first sale of even-numbered lots occurred October 14 and 15, 1879, and at the beginning of May, 1880, 87 had been sold. Most of the owners are putting up cottages.

The Island1 is one mile long, and from 800 to 1,200 feet wide, and lies about a quarter of a mile from the main shore, and a mile and a half from Clayton Village. This park is under the especial patronage of the Baptists, although many persons not connected with this denomina

(1) Named on the charts of the U. S. Engineers as "Pearson's or Round Island." The adjoining Island known as "Little Round Island," is also known on the charts of both governments as "Colborne Island."

tion have taken an interest in the enterprise, both in the States and in Canada. No programme for the first season has been as yet announced.

PROSPECT PARK.

This enterprise has not, at the time of writing, been so far matured as to enable us to announce its plan of organization, nor have Articles of Association been filed. A tract of fifty acres upon Bartlett Point, about a mile above the depot at Clayton, has been laid out into lots and streets, and a considerable amount of grading and improvement has been done. It will differ from the preceding in its being on the main shore. The Point commands a fine prospect, and was the scene of an engagement in the war of 1812-15, described on page 76 of this volume.

THE INTERNATIONAL CAMP GROU. D.

This is in the town of Morristown, St. Lawrence Co., N. Y., about a mile below the village, and comprises about ten acres. It was opened in 1874, and is under the direction of Methodists of New York and Canada, acting jointly, through Trustees appointed on each side. A campmeeting is held once a year, usually beginning in the latter part of July. Convenient access is afforded at these times, both by the Utica and Black River Railroad, and by River Steamers.

THE ST. LAWRENCE CENTRAL CAMP GROUND.

This is on the north shore, in the first concession of Elizabeth Township, Ontario, three miles and a half above

Brockville, and is held and controlled by the Bay of Quinte Conference of the Methodist Episcopal Church. It embraces about 25 acres, finely wooded, and was purchased in 1875. It has a Tabernacle, a Boarding House, and a considerable number of cottages. It is designed not only for camp-meetings, but as a place of Summer residence.

GEOLOGY OF THE THOUSAND ISLANDS.

There is much Geological interest in the rock-formations of this part of the St. Lawrence, and in the evidences that they present as to the changes that the earth's surface has 'undergone since the beginning. For the most part, the Islands consist of gneiss rock, belonging to the Laurentian Period, which here form a connecting link between the vast Primary Region, so called, of Upper Canada, and an extensive district of the same in Northern New York. This gneiss is generally obscurely stratified, but with much confusion in the lines of original deposit, as if they had been softened by heat and distorted by pressure, and the stratification, such as it is, is often highly inclined. The rock is composed largely of a reddish feldspar, with variable proportions of quartz and hornblende, and occasional particles of magnetic iron ore. In some places on the New York side, it is found to contain dykes of trap and greenstone, that ramify into thin veins, as if injected under great presure, and in a

perfectly liquid form. It also contains, in Jefferson and St. Lawrence counties, most interesting crystalline mineral forms, in great variety, and in Rossie lead was formerly mined in this rock to a large amount.

Upon one of the Thousand Islands opposite Gananoque, the gneiss rock is quarried for cemetery monuments, which are sent to Montreal for polishing, and are thought by many to be as beautiful as the red Scotch granite for this use. The rock is there also quarried for paving blocks, and other uses.

At Gananoque, and at various places among the Islands, the Potsdam Sandstone occurs in thick masses, rising into cliffs fifty feet or more above the river, and affording a fine material for building, being easily worked when freshly quarried, and hardening upon exposure to the air. A little back from that town, gneiss forms the principal rock, rising in naked ridges, with intervening plains that indicate the presence of level strata of limestone or sandstone beneath. In this region, white crystalline limestone, steatite and various other minerals occur.

Before reaching Brockville, and for a long distance below, Calciferous Sandstone, and the older limestones constitute the only rock in situ, and afford excellent quarries of building stone. These strata are for the most part level, and the very flat region in Jefferson County, lying a little back from the River, and extending several miles inland, is underlaid by this rock. It contains, in many places, the organic remains of lower forms of animal and vegetable life, that sometimes stand out in fine relief upon weathered surfaces of the rock.

At Kingston, and at various points upon both shores, and upon Carleton, Wolfe, Howe, Grindstone and other Islands, the Birds'-eye and Black River Limestones occur in nearly horizontal strata, and in some places are seen resting directly upon the gneiss, which comes to the surface, here and there, and often rises to a greater elevation than the adjacent limestone. It would appear that at these places an island existed at the time when the sandstones, elsewhere so abundant, were being deposited, and that the limestones were formed directly over the gneiss. This limestone is largely used for building purposes, at Kingston and elsewhere, and it makes excellent lime. From the lower and impure strata of this rock, water-lime, or hydraulic cement, was formerly made in Jefferson County. These limestones at various places contain fossil corals, sponges, shells, and other organic remains peculiar to the older Silurian period. The Black River Limestone, in Watertown, Brownville, and other places, has extensive caves, worn by currents of water in former times. These have been explored to considerable distances, and appear to have been formed by the widening of natural fissures in the rock. Their section is more or less oval in form, sometimes wider than high, and nearly uniting along the line of the fissure, above and below.

The broken region, of which the Thousand Islands are a part, affords on either side of the River, in various places, a number of picturesque Lakes, and within a distance of twenty miles, in Jefferson County, there are extensive mines of red hematite, that have been wrought