Electrical news and engineering . alperiod, when each of these wasan important link in the chainof the universitys it is for his work in re-search that Professor McLen-nan would prefer to be knownand by which he actually is known, by reputation, in everyinstitution of learning where the latest discoveries in elec-trical theories are studied. It began in 1896, when thefamous liontgen, for the first time, published his discoverieson X-rays, opening a field of research that nas formed thebasis of nearly all electrical theory since that time. Thatthe physics laboratory of the Universi
Electrical news and engineering . alperiod, when each of these wasan important link in the chainof the universitys it is for his work in re-search that Professor McLen-nan would prefer to be knownand by which he actually is known, by reputation, in everyinstitution of learning where the latest discoveries in elec-trical theories are studied. It began in 1896, when thefamous liontgen, for the first time, published his discoverieson X-rays, opening a field of research that nas formed thebasis of nearly all electrical theory since that time. Thatthe physics laboratory of the University of Toronto has hadits full share in the rapid advances made by electrical scienceduring these years can perhaps be no better attested tothan by the list of some 40 published articles, each dealingwith a special research, which stands to its credit. Afew only of the more important of these can be mentionedhere, such as— Electrical Condiiclivity in Gases Traversed by CathodeRays; Some Experiments on the Electrical Conductivity. ProfiStoi J. 0. McLeiiuan CANADIAN ELECTRICAL NEWS 37 of Atniosplieric Air; On the Radioactivity of Metals Gen-erally; On the Potential Differences Required to ProduceElectrical Discharges in Gases at Low Pressure; an Exten-sion of Paschens Law; On the Character of the Radiationfrom Ordinary Metals; On the Radioactivity of NaturalGas; On a Radioactive Gas from Crude Petroleum; Onthe Decay of Excited Radioactivity from Natural Gases;On the Secondary Radiation Excited in Different Metals bythe Gamma Rays from Radium; On a New Method ofDetermining the Specific Heat of a Gas at Constant Pres-sure; On the Magnetic Susceptibility of Mixtures of SaltSolutions; On the Constitution and Properties of HeuslersAlloys; Note on an Improvement in the Method of De-termination of Visibility Curves; The Absorption of Differ-ent Types of Beta Rays, together with a Study of the Sec-ondary Rays excited by them; On Variations in the Con- chiclivity of Air Enclosed in Metal
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