The Effect of Boron on the Hardenability of Steel

Many attempts have been made to improve iron and steel and their alloys by the addition of boron. The re­sults obtained were not encouraging for the reason that the amount of boron used, generally from 0.2 to 2.0 per cent is altogether too high. This percentage of boron ren­ders the product hard and brittle and of late the experiments with boron in this connection have been practically abandoned.

An Attempt to Increase the Permeability and Porosity of the Cut Bank Oil Sand By Treatment with Various Reagents

The purpose of this investigation was to attempt to find some means of increasing the effective porosity and permeabil­ity of the producing sands of the Cut Bank Oil Field, with the hope that thereby the ultimate recovery of petroleum from this field may be increased. Although the percentage increase in production thus effected would undoubtedly be small, it would represent a substantial volume of petroleum in view of the great quantity of oil and gas present in this field.

The Electrodeposition of Chromium from Trivalent Salt Solutions

The enormous number of previous experiments and researches for the improvement of the commercial chromic acid bath, did not succeed even in the partial elimination of any one of the disadvantages of chromic acid bath. This led the author to believe that the poor performance is an inherent quality of the chromic acid bath, and is due to the fact that the deposition occurs from the higher state of oxidation.

Bright Electroplating of Copper in the Acid Bath

Plating of various objects with mirror-like surfaces of chromium, nickel, and other metals has expanded considerably during the past decade, and now ranks as an important enterprise, particularly with respect to the automotive industry.

The Acropolitan - v. 3, no. 1

In this issue...John Stansfield, geologist, Mines Debate team, Pi Kappa Delta, Mines Orchestra, Chancellor Brannon, Clark Park, Butte, Montana, Hotel Finlen

The Acropolitan - v. 3, no. 2

In this issue...Glee Club, Carroll College, Ore Diggers, Dancing Club, Thanksgiving, Co-Ed Club, Butte, Bozeman, Montana

The Acropolitan - v. 3, no. 4

In this issue...Mines Basketball, Professor Scott, Glee Club, Wein's, Hotel Finlen, Anderson Carlisle meeting, Metallurgy Laboratory, Oratorical Contest

The Acropolitan - v. 3, no. 5

In this issue...School of Mines Year Book, Junior Promenade, Clark Park, Archie McPhail, Anderson Carlisle Banquet, Butte, Montana, East Butte Copper Mining Company

The Acropolitan - v. 4, no. 4

In this issue...General Electric Company, Butte, Montana, Belmont Mine, Mountain Con Mine, Mines Debate Team," M" Annual, Montana Power Company

The Acropolitan - v. 4, no. 2

In this issue...Silver Crisis, Thanksgiving, Christmas, fraternity, Coach McAuliffe, Butte Electric Railway, North Butte Mining Company, Clark Park

The Acropolitan - v. 4, no. 1

In this issue...Executive Committee Elections, Dancing Club, Maiden Rock Surveying Field Trip, Mines Mixer, Badger Mine, geology, Butte, Montana

The Acropolitan - v. 4, no. 3

In this issue...Mrs. Horace Vaughn Winchell, Anaconda Copper Mining Company, United Engineering Societies library, Geological Engineering, Columbia Gardens

The Acropolitan - v. 4, no. 5

In this issue...Butte Chamber of Commerce, Chess Tournament, Mines League Baseball, Sigma Rho, Handball Tournament, Silver Bow Refining Company

The Acropolitan - v. 5, no. 1

In this issue...Mr. W. B. Daly, Wise River Dam, Montana State Fair, Butte Electric Railway Company, Mines Smoker, St. Lawrence Mine, American Legion

The Acropolitan - v. 5, no. 2

In this issue...Professor L. J. Hartzell, Washoe Sampler, Anaconda, Montana, Co-ed Club, Manganese Plant, Professor Gilbert, Ore Diggers, Mines Football, Columbia Gardens