Nachet medium new-model compound microscope
Datecirca 1872
Inventory Number1990-2-0012a
ClassificationMicroscope
Subject
Maker
Nachet et Fils (I)
fl. 1862 - 1880
Owner
William G. Farlow
1844 - 1919
Cultural Region
Place of Origin
Dimensionsmicroscope: 26.7 × 8.6 × 13.5 cm (10 1/2 × 3 3/8 × 5 5/16 in.)
blue board box, with b-c: 31.1 × 22.9 × 30.5 cm (12 1/4 × 9 × 12 in.)
blue board box, with b-c: 31.1 × 22.9 × 30.5 cm (12 1/4 × 9 × 12 in.)
Material
AccessoriesBox covered by blue paper (1990-2-0012c), marked "mementoes"and containing 4 slides; adapter from Society thread to dual nosepiece (19901-2-0012b) with 11.4 mm threads; 2 objectives : #2 and #7 immersion. No case.
DescriptionThis is an example of the medium-sized compound microscope that Nachet et Fils advertised in 1872 as the "nouveau modele inclinant."
The microscope resembles the Nachet medium microscope with the same horseshoe-shaped base with a cupped heel. The base is brass and weighted with lead. The stand consists of a round pillar topped with an inclining joint. This joint is attached to the stage, and the stage carries the upper part of the microscope.
The tube is carried in a sleeve attached with rack and pinion to a bracket on the main pillar of the microscope. This pillar is fixed to the back of the stage. The tube has telescoping sections. The nosepiece is integral to the tube. Coarse focus is by sliding the tube. Fine focus is by a micrometer screw in the top of the pillar.
The square stage has a black glass top. There are two, spring-loaded stage clips.
There is a substage condenser on a swing-aside mount. The substage mirror is plano-concave and has knurled screws for adjusting its angle. The mirror is fork-mounted on an articulated arm below the stage.
The microscope has 1 eyepiece (# 2). There are two objectives in a revolving nosepiece (1990-1-0012b).
The tube has Society threads. Adapter for the nosepiece permits smaller objectives with approx. 11.5 x 0.45 mm threads. Note that these are not the small "French" threads.
The microscope resembles the Nachet medium microscope with the same horseshoe-shaped base with a cupped heel. The base is brass and weighted with lead. The stand consists of a round pillar topped with an inclining joint. This joint is attached to the stage, and the stage carries the upper part of the microscope.
The tube is carried in a sleeve attached with rack and pinion to a bracket on the main pillar of the microscope. This pillar is fixed to the back of the stage. The tube has telescoping sections. The nosepiece is integral to the tube. Coarse focus is by sliding the tube. Fine focus is by a micrometer screw in the top of the pillar.
The square stage has a black glass top. There are two, spring-loaded stage clips.
There is a substage condenser on a swing-aside mount. The substage mirror is plano-concave and has knurled screws for adjusting its angle. The mirror is fork-mounted on an articulated arm below the stage.
The microscope has 1 eyepiece (# 2). There are two objectives in a revolving nosepiece (1990-1-0012b).
The tube has Society threads. Adapter for the nosepiece permits smaller objectives with approx. 11.5 x 0.45 mm threads. Note that these are not the small "French" threads.
Signedengraved on heel: NACHET ET FILS / 17, rue St. Severin. Paris
ProvenanceWilliam G. Farlow, Assistant Professor of Botany in the Bussey Institution, Jamaica Plains, and then Professor of Cryptogamic Botany at Harvard; Farlow Herbarium, Harvard University; transferred to CHSI April 7, 1990.
Historical AttributesThis microscope belonged to William G. Farlow, who was Assistant Professor of Botany (1874-1879) in the Bussey Institution, Jamaica Plains. In 1879, Farlow was appointed Professor of Cryptogamic Botany at Harvard. He remained in this position until 1919, when he died.
The slides that accompanied this microscope (1990-2-0012c) include one of Cucurbita, which was the first preparation made by Farlow at Strasbourg in October 1872; that of Peronospora infestans was made by Anton de Bary in 1872; and that of Pilostyles haussknechtii was made by Count Solms.
Nachet et Fils (I)
Date: 1872-1880
Accessories: Objective #1 with 11.5 mm threads; adapter to Society threads; ocular #3; condensor with iris; dual substage mirror on jointed arm; no case.
Object number: 1306
A. Nachet
Date: 1880-1890
Accessories: 3 Objectives: #7 Nachet with adjustment collar and Society thread in cannister (1107c), small box with # 3 and 6 (11.5 mm threads) and adapter to Society threads (1107b); 2 oculars: no # and 2; bull's eye condenser; pill box with with cover glasses; flat case (1107d) with key.
Object number: 1107a
Charles-Louis Chevalier
Date: circa 1840
Accessories: 2 regular objectives; a high power objective; a low power objective (a variable power dissecting lens) with an extension arm for this lens; 2 dissecting lenses; 1 objective with lieberkuhn; objective with polarizer; 2 regular eyepieces; 1 erecting eyepiece; 1 micrometer eyepiece; stage micrometer, stage bull's eye condenser on jointed arm; camera lucida; tweezers; 3 dissecting tools; pillar extension;
compressorium, 2 objective adaptive mounts (one with Chevalier threads, another with Oberhauser threads); 2 adaptors for Chevalier lenses to other microscopes (one adaptor having Society threads); case.
Object number: 1093
Nachet et Fils (I)
Date: 1862
Accessories: 3 Oculars: 1, 2, 3; 3 Objectives in fitted box:1, 2, 3; one on tube: also #5, but longer; Camera lucida "Nachet"; 9 Glass slides; Cover glasses; bull's eye on jointed arm; wheel with 2 stops under stage; small blue filter; flat case with key.
Object number: 1069
Nachet et Fils (I)
Date: 1862
Accessories: 3 Oculars: 1, 2, 3; 3 Objectives in fitted box:1, 2, 3; one on tube: also #5, but longer; Camera lucida "Nachet"; 9 Glass slides; Cover glasses; bull's eye on jointed arm; wheel with 2 stops under stage; small blue filter; flat case with key.
Object number: 1069a
Camille Sébastien Nachet
Date: 1855-1865
Accessories: oculars (3); objectives (2 large with 13 mm thread): 4, 8 with screw canisters for the same; objectives (3 with ~6.4 mm threads); nosepieces (3); parts box; flat mahogany case; no key.
Object number: 1108
Nachet et Fils (I)
Date: 1862-1880
Accessories: 5 objectives (11.5 mm) in leather-covered box (1025b): 1, 3, 5, 5, 7 immersion; 4 oculars: 1, 2, 3, no #; bull's eye on articulated stand (1025d); mahogany parts box (1025c with dissecting instruments: 6 needles, 2 scalpels, scissors, tweezers, 4 slides, box of cover glasses, 2 cup diaphragms, 1 diffuser ; flat case with fine lock, no key.
Object number: 1025a
Camille Sébastien Nachet
Date: 1845-1850
Accessories: oculars (2): unmarked; objectives (7) : ?, 1(?), 2, 3, 4, 6, 7 in fitted wood box (1081b); mechanical stage (1081c); adjustable bull's eye; concave substage mirror; diaphragm wheel; specimen tray; black-white disk; case.
Object number: 1081a
Camille Sébastien Nachet
Date: 1856-1862
Accessories: oculars (2): 2 , 3; objectives (6) in fitted box (1029b): 0, 1, 2, 3, 5, 7, along with substage condenser and oblique Nachet prism condenser; cup diaphram; flat case with parts box (1029c) holding diffuser, camera lucida; stage micrometer; ocular micrometer; wet specimen trough, 4 slides in red leather box (1029d); bull's eye condenser.
Object number: 1029a
Charles-Louis Chevalier
Date: circa 1840
Accessories: 2 convertible objectives: 1, 2, 3 and 0,00,000; 2 oculars; simple magnifiers: 3 and 5, with support bracket; extension pillar; bull's eye stage condenser on jointed arm; forceps; 3 prepared slides; box of cover glasses; 1/100 mm stage micrometer; camera lucida; tall bell jar; padlock on chain; case with key; table of magnifications
Object number: 1079
Lerebours et Secretan
Date: 1845-1855
Accessories: 2 convertible objectives; 3 nosepieces; 1 larger objective; 1 ocular; right-angled and straight tubes; mechanical stage; dissecting set; mechanical stage; case with drawer.
Object number: 1220
Nachet et Fils (I)
Date: 1862
Accessories: 6 objectives in box (1157b) with 1 substage condenser; oblique prism condenser; 3 oculars; 1 cup diaphragm, 1 diffuser, ; camera lucida; stage and eyepiece micrometers; liquid trough; 3 dissecting knives; prepared slides in box (1157d); plain slides; cover glasses; bull's eye on jointed arm(1157e); Amici's illuminator prism with stand (1157f); compressorium (1157g); case with parts box (1157c).
Object number: 1157a
See also/See also
