Pressure dependence of superconductivity in amorphous Ni x Zr 100-x alloys

Pressure variations of the superconducting transition temperature Ic of a series of amorphous NixZr 1 OO-x alloys have been studied under quasmydrostatic pressures upto 8 G Pa. For amorphous samples having Ni-concentration less than 40%, i)Tc/dP is positive in sign and it decreases non linearly with increase in I. whereasdTcldP is negative in sign for Ni concentration of 45%. Comparison with the Hall coefficient (I) and the thermoelectric power (2) results for the same amorphous alloys leads to the conclusion that s-d hybridization nature of the d-band (Nil plays a central role in the sign reversal behaviour. Application of pressures greater than 2 G Pa to Ni20ZrgO led to the formation of a new phase, w-Zr. which retains its form after the pressure is released.

Photograph of Unidentified Man by J. W. Cole, Photographer [n.d.]

This is a small cabinet card of an unidentified man, photographed by J. W. Cole, of Brampton, Ont. He is possibly a relative of the Bell - Sloman family, whose descendants include former Black slaves who settled in Canada. While this photograph is undated, it is believed to be taken between 1865 and 1884. The photographer's stamp is printed in gold lettering along the bottom of the card. This photograph was in the possession of Iris Sloman Bell, of St. Catharines.Two photographers by the name of Cole are known to have worked in Brampton, Ontario in the latter half of the 19th century. J.F. (John W.?) is listed as a photographer in 1882, while John W. Cole operated from 1865-1884. John W. Cole is also listed as a daguerrean artist, that is, he produced daguerreotypes. He also dabbled in commerce, selling fancy goods. Source: Phillips, Glen C. The Ontario photographers list (1851-1900). Sarnia: Iron Gate Publishing Co., 1990.

Blueprint - 200 K.W. D.C. Vert. Type Gen. 125 V. 8 P. 600 R.P.M., B 89521, 10586, 2-R1-H21.6

A blueprint produced by Westinghouse Electric & MFG. Co. in Pittsburgh, Pennsylvanna. The blueprint is dated 19 August 1903 and is stamped "OBSOLETE".

Letter - Frederic Nicholls (Canadian General Electric) to W.B. Rankine, 17 December 1897

A letter from 2nd Vice President and General Manager of Canadian General Electric Company, Frederic Nicholls to W. B. Rankine regarding a bid for contract. The letter mentions that the bid for two alternating generators for the Canadian side of Niagara Falls was won by Westinghouse Eletric and Manufacturing Co. Nicholls also mentions that there will be other opportunites to win contracts as more machines are required. Nicholls also implies that Westinghouse may have bid under cost in an effort to secure the first of many contracts with the Canadian Niagara Power Company.

Letter - C. Sellers to W. B. Rankine, 26 September 1902

A letter from chief engineer C. Sellers to W. B. Rankine discussing the bid of I. P. Morris Co. Sellers discusses conversation with Mr. Hand of I.P. Morris.

Price List - Lawrence A. Wilson Co. Limited, 1916

A price list for Lawrence A. Wilson Co. Limited, 87 James St., Montreal Quebec. It is addressed to The Toronto Hunt, 52 Bay Street, Toronto. There are additional handwritten notes. One of the handwritten notes reads "ck to W. Stephen Haas"

Receipt from H.H. Glenny Sons and Co., Importers, Buffalo, New York for chandelier globes

Receipt from H.H. Glenny Sons and Co., Importers, Buffalo, New York for chandelier globes, Jan. 25, 1887.