Catalogue des instruments d'optique... de tableaux... Vente, après le décès de M. Derepas, opticien,... 9 mars 1832...

[Vente (Art). 1832-03-09. Paris]

Catalogue d'une collection de tableaux... Vente 26 mars...

[Vente (Art). 1832-03-26. Paris]

Notice de quelques tableaux... vente après le décès de M. de R..., 10 mars 1834...

[Vente (Art). 1834-03-10. Paris]

Notice... de tableaux... Vente 14 mars 1839...

[Vente (Art). 1839-03-14. Paris]

Notice d'objets d'art et de curiosité... vente 6 mars 1840...

[Vente (Art). 1840-03-06. Paris]

Catalogue d'objets d'art... Vente 30 mars 1840...

[Vente (Art). 1840-03-30. Paris]

Catalogue d'objets d'art... Vente 5 mars 1844...

[Vente (Art). 1844-03-05. Paris]

Notice de tableaux... Vente 11 mars 1844...

[Vente (Art). 1844-03-11. Paris]

Catalogue d'un... mobilier,... objets d'art... Vente... Départ de M. le chevalier J***... 19 mars 1845...

[Vente (Art). 1845-03-19. Paris]

Catalogue de tout le matériel du théâtre du Panthéon... Vente 5 mars 1846...

[Vente (Art). 1846-03-05. Paris]

Galerie du Luxembourg, des Musées, palais et châteaux roy. de France gravée et publiée sous la direction de feu Francisque Noel... Dessins, planches,... Vente 12 mars 1828,...

[Vente (Art). 1828-03-12. Paris]

Notice sur les tableaux... de la vente... 26 mars 1839... après Départ de M. Porel...

[Vente (Art). 1839-03-26. Paris]

Geology Students

Geology Students outside Brock in the late 1960's.

Quaternary geology of the Campbellford, Trenton, Consecon, Tweed, Belleville, Wellington, Sydenham, Bath, and Yorkshire Island map-areas, Ontario /

Sediment relationships observed during geological mapping in southeastern Ontario indicate a relatively simple deglaciation history for the area during late Wisconsin time. The ice from the north (part of the Lake Simcoe lobe) and the Lake Ontario ice lobe, which were coalesced during most of late Wisconsin time, initially separated along the crest of the Oak Ridges Moraine. Available data indicate that the Oak Ridges Moraine is composed primarily of sediments pre-late Wisconsin in age capped by late Wisconsin till and interlobate deposits. Retreat of the northern ice was relatively steady and resulted in the deposition of the Dummer Moraines, a facies of the drumlinized till to the south. Retreat of the Lake Ontario ice lobe into the Lake Ontario basin was interrupted by a re-advance which covered the southeastern half of the map area. The northern ice had already retreated from the area by this time. The Lake Ontario lobe was fed through the St. Lawrence Valley, indicating that the Ottawa Valley was ice filled at this time. High level glacial lakes fronted the ice during deglaciation. These waters quickly fell to low levels as the ice retreated from the St. Lawrence Valley, opening lower outlets.

The surficial geology, sedimentology and geochemistry of the late glacial sediments and Paleozoic bedrock in the Campbellford area, Ontario, with special reference to the Dummer Complex /

The Dummer Complex extends 180 km along the Precambrian - Paleozoic contact from Tamworth to Lake Simcoe. It is composed of coarse, angular Paleozoic clasts in discontinuous, pitted, hummocky deposits. Deposits are usually separated by bare or boulder strewn bedrock, but have been found in the southern drumlinized till sheet. Dummer Complex deposits show rough alignment with ice-flow. Eskers cross-cut many of the deposits. Dummer sediment subfacies are defined on the basis of dominant coarse grain size and lithology, which relate directly to the underlying Paleozoic formation. Three subglacial tills are identified based on the degree of comminution and distance of transport; the immature facies of the Dummer Complex; the mature facies of the drumlinized till sheet and; the submature facies which is transitional. Carbonate geochemistry was used for till-bedrock correlation in various grain sizes. Of the 3 Paleozoic formations underlying the Dummer Complex, the Gull River Fm. is geochemically distinctive from the Bobcaygeon and Verulam Formations using Ca, Mg, Sr, Cu, Mn, Fe and Na. The Bobcaygeon Fm. and Verulam Fm. can be differentiated using Ca and the Sr/Ca ratio. The immature facies from 1.0 phi and finer is dominated by the non-carbonate, long distance transported component which decreases slightly downice. The submature till facies contains more long distance material than the immature facies. Sr and Mn can be used to correlate the Gull River immature till facies to the underlying bedrock the other subfacies could not be distinguished from each other or their respective source formation. This method proved to be ineffective for sediments with greater than 35% non-carbonate component, due to leaching of elements by the dissolving acid.The Dummer Complex is produced subglacially , as the compressional ice encounters the permeable Paleozoic carbonates. The increased shear strength of the ice and pore pressures in the carbonates results in the basal ice zones becoming debris ladden. Cleaner ice overrides the basal debris . laden dead ice which then acts as the glacier bed. During retreat, the Simcoe lobe stagnates as flow is cut-off by the Algonquin Highlands.