bull's eye condenser
Date1862
Inventory Number1157e
ClassificationMicroscope Condenser
Subject
Maker
Nachet et Fils (I)
fl. 1862 - 1880
Cultural Region
Place of Origin
Dimensions17 × 13 × 5.7 cm (6 11/16 × 5 1/8 × 2 1/4 in.)
Material
Description1157 is a fine example of the type of compound microscope that Nachet et Fils called the "grand modèle." For descriptive purposes and better comparison with a similar but not identical, early "grand modèle" by Nachet, the assembly is divided into these components, each with their own images and written details:
1157a: the microscope with eyepieces
1157b: box of objectives and condensers
1157c: microscope case and parts box, with diverse accessories
1157d: box of slides
1157e: bull's eye condenser
1157f: Amici illuminating prism, Nachet-style
1157g: compressorium
1157h: manuscripts found in case
-------------------------------------
1157e is a bull's eye condenser included in the box of the Nachet microscope. It consists of a condensing lens held in a brass frame on a stem. The stem slips into an articulated arm that screws into a lead-weighted brass base. The base has a conical profile.
1157a: the microscope with eyepieces
1157b: box of objectives and condensers
1157c: microscope case and parts box, with diverse accessories
1157d: box of slides
1157e: bull's eye condenser
1157f: Amici illuminating prism, Nachet-style
1157g: compressorium
1157h: manuscripts found in case
-------------------------------------
1157e is a bull's eye condenser included in the box of the Nachet microscope. It consists of a condensing lens held in a brass frame on a stem. The stem slips into an articulated arm that screws into a lead-weighted brass base. The base has a conical profile.
Signedunsigned
ProvenanceDr. Algernon S. Coolidge, Sr, Harvard Medical School; Dr. Algernon S. Coolidge, Jr, Harvard Medical School; Dr. Edward D. Churchill, before 1940; gift to Ernst-Lewis Collection of Microscopes (inv. no. 157), Harvard Medical School, 1940.
Historical AttributesFormerly Ernst-Lewis collection no. 157.
Dr. Lewis notes: "From Dr. Edward D. Churchill in 1940. It came to him from the heirs of Dr. Algernon Coolidge, and possibly belonged to his father [Dr. Algernon Coolidge. Senior]. The brass trimmed mahogany box with full equipment was in its leather case. Since this microscope would have been out of date for Dr. Coolidge Jr. (AB 1881; MD 1886; Professor of Laryngology, 1911-1925), it in all probability belonged to his father, Algernon Coolidge, MD 1853, University Lecturer 2nd half 1867-1868, Instructor in Pathological Anatomy, 1865; Lecturer on Tumors, 1868-1869, in connection with which this microscope would have been excellent equipment."
Nachet et Fils (I)
Date: 1862
Accessories: 1 cup diaphragm, 1 diffuser; camera lucida; stage and eyepiece micrometers; liquid trough; 3 dissecting knives; prepared slides in box (1157d); 3 prepared slides loose; 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: 1157c
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
Nachet et Fils (I)
Date: 1862
Accessories: 6 objectives in box (1157b) with 1 substage condenser; oblique prism condenser
Object number: 1157b
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
Camille Sébastien Nachet
Date: 1856-1862
Accessories: 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 (1029e).
Object number: 1029c
