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AMERICAN MICROSCOPICAL SOCIETY

DECATUR, ILLINOIS ANNUAL SUBSCRIPTION $3.00

SINGLE COPY $1.00 DOUBLE NUMBERS $2.00

W.WATSON & SON

SONS).
MICROSCOPES.

WATSON'S
"RESEARCH"

MICROSCOPE

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Watson's “Research” Microscope with long range Mechanical Stage on Turrell system. Compound Substage with rackwork focussing and centering screws.

Fine Adjustment with vertical lever operated from either side of limb,-never failing, -no cogs or complications.

An ideal Instrument for the Amateur or Bacteriologist.

$58.50 RESEARCH MICROSCOPE WHY A WATSON'S MICROSCOPE?

It enables the worker to extract from his optical fittings the finest results they are capable of yielding. Refinements for working are provided which long experience of experts has proved to be the sole means for achieving such results.

The Watson Microscope does not fall over when it is touched; it has a tripod foot.

It can be used for very low magnification as well as for the highest. The long range of coarse adjustment permits this.

The mechanical stage is scientifically constructed as a part of the whole instrument and not an easily disordered attachable accessory.

The Watson-Wenham Binocular Body is a feature of the Watson Instrument.

All fittings are interchangeable and are standardised to the gauges of the Royal Microscopical Society.

Working parts of the Watson Instruments have spring fittings and adjusting screws whereby wear may be compensated for.

Watson Condensers have the necessary aplanatic cones for developing the fullest capacity of the objective, and the substage which carries the condenser is constructed with centering screws to enable it to be efficiently used.

Watson British-made Microscopes are Scientific Instruments for Scientific work, not merely tools that magnify. They are the Microscopes of to-day and the future. They give a lifelong working efficiency.

Do Not Handicap Your Possibilities

START RIGHT AWAY

With Every Advantage Full particulars of the above and of all accessories for Microscopical work are given in Watson's 168 page catalogue of Microscopes, sent post free on application.

WATSON'S UNRIVALED MICROSCOPIC OBJECTS The Best Test Objects, The Most Beautiful Exhibition and "Oh My!” Slides, The Finest Typical Sections for Educational Purposes can be selected alone from the largest stock of Micro-Objects in the World at WATSON & SONS.

Send for Catalogue No. 3A.M. for full particulars, free on application. W. WATSON & SONS MICROSCOPE MAKERS

Wholesale and Rotall Established 1837

313 High Holborn, London, England There is no duty on Microscopes imported for Educational Institutions.

Members and Friends Should Patronize Our Advertisers

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Entered as Second-class Matter December 12, 1910, at the Postoffice at Decatur, III.
aois, under act of March 3, 1879.

DECATUR, ILL.
REVIEW PRINTING & STATIONERY Co.

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