| Notes on Polarizing Microscopes by Allan Brugh Dick 1890/1895

## Table of Contents for Notes on a new form of Polarizing Microscope

Description of the Instrument | Page 11
Its application to Petrological purposes, with remarks on the use of Parallel and Convergent Polarized Light | Page 18
How to Measure angles of extinction | Page 26
How to distinguish between the two directions of extinction in any double refracting Mineral | Page 28
How to distinguish between what are called positive (+) and negative (-) Crystals | Page 29
How to observe the "dispersion" in any Mineral | Page 32
How to determine the character of the Pleochroism of any Mineral | Page 33
How to compare the strength of the refraction and double refraction of different Minerals | Page 36
How to examine any rock-forming Mineral | Page 39
How to examine any Sand | Page 41
How to examine any Rock | Page 45
How to verify the Instrument | Page 56

## Page Index for Notes on a new form of Polarizing Microscope

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## Table of Contents for Additional notes on the Polarizing Microscope

Objectives and Condensers | Page 1
The Aperture Test Plate | Page 2
Illumination of Microscopic Objects | Page 10
The Light at the back of the Objective | Page 12
Test Objects | Page 18
The Resolution of Diatoms | Page 19
Angles shown by the Rings in the Aperture Test Plate | Page 35
Appendix | Page 37

## Page Index for Additional Notes on the Polarizing Microscope

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Page ix
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Page 37 | Page 38

## Page Index for Catalogue of Petrological Microscopes by James Swift & Son (1910)

Cover
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