A new petrographic microscope

The Role of the Petrographic Microscope in Criminal Investigations

Heavy Media Column Separation: a New Technique for Petrographic Analysis

A heavy media column is used for the separation of the mineral fractions of a sample. Thus the directly weighed per cent of the mineral composition of the rock or ore sample is accomplished. ttre teihnique may be applied to the concentration of a particular species, e,ren i.r trace amounts, for further mineralogical studies or for practical commercial metallurgical mineral beneficiation purposes'

A new microscope for the kidney: mathematics.

The discovery of the microscope in the late 17th century revealed otherwise invisible processes, and revolutionized biology. Years later, mathematics has the potential to do the same. We will highlight recent studies that utilize computational modeling techniques to investigate kidney function. Like a microscope, mathematical models offer a variety of “magnification levels” that focus on differ...

A New Class and Demonstrating Microscope

1 and 2 is one which lias recently been constructed, at my suggestion, by Mr. Charles Collins, the Optician of Great Tichfield Street ; and may, I think, be found useful by those engaged in teaching microscopic anatomy. The old method of lecturing upon diagrams, and exhibiting specimens under the microscope after lecture,has these two serious objections: ls?,a large number of microscopes must b...

A new operating microscope for ocular surgery.