Indenture between The St. Catharines and Niagara Central Railway Company and Samuel DeVeaux Woodruff

Indenture of deed of land situate between The St. Catharines and Niagara Central Railway Company and Samuel DeVeaux Woodruff of St. Catharines regarding parts of Lots no. 12 and 13 30 in the 8th Concession of the Township of Grantham. This was registered at Merritton on Feb. 2, 1891 – instrument no. 1021, Aug. 16, 1890.

Proceedings of the Court Martial Held by Order of Major Merritt

Proceedings of the court martial held by order of Major Merritt (1 double-sided page, handwritten): Captain Hamilton gave evidence against Caleb Cook (a private in Major Merritt’s Company of Light Dragoons) for disobedience and leaving quarters without leave of absence. Cook was fined and ordered to spend one month in prison. The document is stained and has holes in it along the middle fold. This does not affect the text, Aug. 7, 1812.

Letter - Order Sent to Troughton and Simms by S.D. Woodruff

Letter containing an order sent to Troughton and Simms by S.D. Woodruff regarding a level (1 ½ pages). The letter is handwritten in pencil and is quite faded. Mr. Woodruff has illustrated the type of level he requires. The company is directed to send the boxes to Samuel D. Woodruff of St. Catharines, Aug. 22, 1846.

Scrap of paper with numbers of railway journals volume numbers, n.d.

Scrap of paper with numbers of railway journals volume numbers, n.d.

Letter from the office of Hart, Ball and Hart of Buffalo, New York to William R. Allen of St. Catharines, Ont.

Letter (2 pages, handwritten) from the office of Hart, Ball and Hart of Buffalo, New York to William R. Allen of St. Catharines, Ont. proposing work to be done regarding the hot water heating of the building. The owner of the building is expected to pay the railway fare of the men and to pay their board while they are in St. Catharines, July 8, 1876.

The Effects of Magnetic Dilution and Applied Pressure on Several Frustrated Spinels

The effects of magnetic dilution and applied pressure on frustrated spinels GeNi2O4, GeCo2O4, and NiAl2O4 are reported. Dilution was achieved by substitution of Mg2+ in place of magnetically active Co2+ and Ni2+ ions. Large values of the percolation thresholds were found in GeNi(2-x)MgxO4. Specifically, pc1 = 0.74 and pc2 = 0.65 in the sub-networks associated with the triangular and kagome planes, respectively. This anomalous behaviour may be explained by the kagome and triangular planes behaving as coupled networks, also know as a network of networks. In simulations of coupled lattices that form a network of networks, similar anomalous percolation threshold values have been found. In addition, at dilution levels above x=0.30, there is a T^2 dependency in the magnetic heat capacity which may indicate two dimensional spin glass behaviour. Applied pressures in the range of 0 GPa to 1.2 GPa yield a slight decrease in ordering temperature for both the kagome and triangular planes. In GeCo(2-x)MgxO4, the long range magnetic order is more robust with a percolation threshold of pc=0.448. Similar to diluted nickel germanate, at low temperatures, a T^2 magnetic heat capacity contribution is present which indicates a shift from a 3D ordered state to a 2D spin glass state in the presence of increased dilution. Dynamic magnetic susceptibility data indicate a change from canonical spin glass to a cluster glass behaviour. In addition, there is a non-linear increase in ordering temperature with applied pressure in the range P = 0 to 1.0 GPa. A spin glass ground state was observed in Ni(1-x)MgxAl2O4 for (x=0 to 0.375). Analysis of dynamic magnetic susceptibility data yield a characteristic time of tau* = 1.0x10^(-13) s, which is indicative of canonical spin glass behaviour. This is further corroborated by the linear behaviour of the magnetic specific heat contribution. However, the increasing frequency dependence of the freezing temperature suggests a trend towards spin cluster glass formation.

Map of the proposed canal through the district of Niagara and Gore to form a junction of Lake Erie and Ontario by the Grand River

Map, 55 cm. x 75 cm. (printed, coloured and mounted on a board). The map is of the proposed canal through the district of Niagara and Gore to form a junction of Lake Erie and Ontario by the Grand River compiled from the actual survey by order of the commissioners of internal navigation by James G. Chewett. James G. Chewett was Assistant Draftsman under the direction of Thomas Ridout, Surveyor General of the Province, n.d.