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A. G. BARBER, PRES. TREAS. F. A. BARBER, VICE PRES. FOUNDED 1889. INCORPORATED 1894. R. C. THOMPSON, ASST. TREAS.,
MANAGER. W. W. SLADE, SECRETARY, SUPERINTENDENT. GLOBE OPTICAL COMPANY THE HOUSE OF NEW ENGLAND MANUFACTURERS IMPORTERS
EXPORTERS OPTICAL GOODS. MARLBORO BUILDING, 403 WASHINGTON ST. SURGICAL INSTRUMENTS, EYE, EAR, NOSE THROAT. NEW ENGLAND
AGENTS HARDYS OPHTHALMOMETERS DE-ZENGS LUMINOUS INSTRUMENTS SHUR-ON SO-EASY MOUNTINGS MAKERS OF TORIC AND SPECIAL
LENSES. INVISIBLE BIFOCALS. OPTICAL MACHINERY AND WORK BENCHES. GLOBE TABLES AND CABINETS. GLOBE EAR-PHONES. Los
Angeles, Calif. August 14, 1907. John Muir, Martinez, Cal. Dear Mr. Muir: As you will see by this letter, I have returned
from the Sierra Club outing, and am feeling finely; ready for another year of hard work. I am sending you under separate
cover, catalogue of Microscopes and Accessories, made by the Bausch Lomb Optical Co., of Rochester, New york. I wrote Mr.
Edw. Bausch from camp, explaining what you wanted in the way of a Microscope, and a letter just received, advising Stands
AH or BH, illustrated on pages 21 and 22 of catalogue. I should advise Stand BH4 as being the best all round Microscope for
such work as you want. By reference to page 63, you will see that with the two-inch eye-piece, and the 2/3 objective, you
will get 41 diameters, while with the one-inch eye-piece and 1/6 objective, you will get 585 diameters; thus giving you quite
a range of power, with a very low priced Microscope. For the proper illumination of opaque objects, I should recommend using
the new Vertical Illuminator, illustrated on page 72. This illuminator has recently been improved, and the price changed to
7.50. I believe I mentioned Dissecting Microscopes; the Y Stand illustrated on page 52, is very good, but you can get only
40 diameters magnification, and the lens giving' this power is of short focus, with very small field. Pocket Magnifiers are
illustrated on page 59, and as you will note, have recently been raised in price. These are not mounted in Aluminum, as you
mentioned to me, but the German Silver is said to be stiffer and meanly as light. I shall be in San Francisco, Monday, the
19th inst., and if you would like to have me send you a Microscope and some Magnify- 03916