double-pillared compound microscope
Datecirca 1840
Inventory Number1031
ClassificationMicroscope
Subject
Maker
French
Maker
Bourgogne & Alliot
1866 - 1867
Cultural Region
Place of Origin
Place of Use
Dimensionsmicroscope: 24 × 10.5 × 10.2 cm (9 7/16 × 4 1/8 × 4 in.)
case: 8.9 × 26.3 × 14 cm (3 1/2 × 10 3/8 × 5 1/2 in.)
box: 9.5 × 31.4 × 18.7 cm (3 3/4 × 12 3/8 × 7 3/8 in.)
case: 8.9 × 26.3 × 14 cm (3 1/2 × 10 3/8 × 5 1/2 in.)
box: 9.5 × 31.4 × 18.7 cm (3 3/4 × 12 3/8 × 7 3/8 in.)
Material
Accessories3 objectives 1, 2, 3; 1 ocular; forceps; slide; case
DescriptionTwo pillars support the body tube, which has coarse focus by means of a draw tube. Fine focus is by means of a knurled screw on one of the lower pillars below the stage. Turning the screw raises and lowers the stage, which rides between the pillars. A condensor is attached to an arm fitted to the sleeve of the body tube. Substage apparatus is a pivoting concave mirror.
Accessories include a disk of frosted glass with a polished concave center, which can sit on the stage. Objectives are marked 1, 2, and 3. There is a fitted box, which holds a pair of forceps and a prepared slide of "Trichinos Spiralis of Human's muscles."
Accessories include a disk of frosted glass with a polished concave center, which can sit on the stage. Objectives are marked 1, 2, and 3. There is a fitted box, which holds a pair of forceps and a prepared slide of "Trichinos Spiralis of Human's muscles."
Signedprepared slide: BOURGOGNE & ALLIOT / Préparateurs / a Paris
microscope: unsigned
ProvenancePurchase in France by Mrs. William Francis Day (Lydia Ward Jenkins), gift to son, Hilbert Francis Day before 1906; Dr. Hilbert Francis Day, 17 January 1906 gift to Dr. Harold C. Ernst by way of Charles X. Dalton, who cleaned it first. Ernst-Lewis Collection of Microscopes (inv. no. 31), Harvard Medical School.
Historical AttributesPurchased in France by the mother of Hilbert Francis Day (Harvard MD, 1905) as a gift for her son. Dr. Day gave it to Dr. Harold Ernst for the collection in 1906, by way of Charles X. Dalton, who cleaned it first.
English
Date: 1850-1875
Accessories: 2 objectives with canisters: 1/4, 1 inch; 14 prepared slides; 6 glass slides; 1 micrometer slide (100th, 1000th inch rulings); tweezers; case with parts drawer
Object number: 1102
Newton & Company
Date: circa 1860
Accessories: objective with canister: 1 inch; ocular; frog / fish plate; live box; mechanical stage; standing case
Object number: 1246
Boston Optical Works
Date: 1860-1890
Accessories: Three dated Tolles objectives: 1/2" Nov. 18, 1860, 1/4" Dec. 23, 1877, 1/5" Oct. 28, 1868; 1 high power solid eyepiece, 1 low power normal eyepiece; polarizer; substage mirror; mechanical stage, standing case.
Object number: 1066
Joseph Zentmayer
Date: circa 1875
Accessories: monocular body tube; 1 set of paired eyepieces; oculars (3); objective in canister: 8/10; wheel diaphragm; glass window; case; key.
Object number: 1073
Date: 1860-1870
Accessories: eyepiece; convertible objective consisting of 3 objectives nested as one
Object number: 2002-1-0058
Cary (firm history)
Date: 1855-1860
Accessories: ocular; cylindrical adaptor or substage baffle; standing box
Object number: 1234
Robert Field & Son
Date: 1854-1860
Accessories: Two objectives in cans; 2 oculars; 1 unexplained optical tube with ocular and what may be a long working distance objective; live box; stage forceps; standing mahogany case.
Object number: 1248
Smith & Beck
Date: circa 1850
Accessories: Achromatic condensor; a darkfield condenser (Wenham's parabolic reflector); a substage set of aperture stops on a swingaway vane inside a sleeve; a nickel tweezers; a stage forceps; and a bull's eye condenser with a stand, a glass tray for the stage, Varley live box; case.
Object number: 1059
Carl Zeiss Jena
Date: circa 1928
Accessories: oculars(2): a pair of K 15x Mobimi; objectives (3): apochromats 20 n.a. 0.65 and 70 n.a. 1.25, and achromat 8 n.a. 0.20; mechanical stage; condenser with iris diaphgragm; locking screw with washer and screwdriver; standing case, key.
Object number: 1369
W. Watson & Sons Ltd.
Date: circa 1885
Accessories: oculars (2 pairs): B and D; objectives in marked canisters (4): 1/4, 1/2, 1, 3 inches; condenser with iris diaphragm; rotating wheel diaphragm; iris diaphragm; set of 4 disk diaphragms in brass box; triple nosepiece; live box; prisms for Wenham binocular system (2); stage for simple microscope with rotating wheel diaphragm; vulcanite stage; spare knobs (2); parts box; case
Object number: 1249
Claude Paris
Date: 1745-1750
Accessories: 4 objectives in wooden mounts; 2 pin wrenches; stage forceps; 4 wood slides with two specimens each.
Object number: 1183
Edward Bryan
Date: 1866-1879
Accessories: objectives in canisters (3): 1/4, 1, 2 inch; ocular; live box; box of cover slips; prepared slides (5 small, 12 large); ivory slide; 5 powdered specimens in blue paper; bull's eye condenser; stage forceps; standing case with parts drawer.
Object number: 1085