Microscopic illustrations of living objects, their natural history, &c. &c / by Andrew Pritchard ; with researches concerning the most eligible methods of constructing microscopes and instructions for using them by C.R. Goring.

  • Andrew Pritchard
Date:
1838
Catalogue details

Licence: Public Domain Mark

Credit: Microscopic illustrations of living objects, their natural history, &c. &c / by Andrew Pritchard ; with researches concerning the most eligible methods of constructing microscopes and instructions for using them by C.R. Goring. Source: Wellcome Collection.

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    best) SHES SEH HEEOOH ETOH SEE SHE eeEH es For the foci, apertures, and powers, given by achromatic object-glasses, see M.I. nee OL. Pe ap 336 34. Spherule magnifiers, from 1-30th to 1-300th of an inch focus .......45 35. Single, Doublet, and Triplet Glass Magnifiers, mounted ......ssess+00s ienerain Magnifying Power. Single Lenses. Doublets. Triplets. parts ofinch Linear. Superficial. £. noidedoney-tercdeh 1 Boi so ids One inch: 10... 100:times ..<,0+-4 6... OPFF 6*.. 1-2d “... 20%.- 400 — ..° = te rss sy spa Rk 1°36 SC Prs0Cn 900 Ss ae i) Ao — A 5th? ee 0 SA p00 OS ie e 48 — we Oo TAD 827100 10000 eer Oe Od 0) OU 0g 4-20th :77 200%..° 40000°° 5 0 12° ON. 2210 80 Bese 14-30th ... 300... 90000 — ...016 0... — aes 1-40 ss 200 100000 a ‘.— o. = 1-50th ... 500... 250000 — ae = 4-601h.... 000%. COUUU0 = _ nm = 1-80th ... 800... 640000 “== “... — oo— a. 36. Single and Doublet Diamond, Sapphire, and Garnet Magnifiers ...... 37. Pocket Magnifiers, in tortoise-shell frames, VATIOUS ...csecerecvseeses eve 38. wid Y lenses, in neat fraMe .iesssseereseeeeevee coveeeeves 39, i a and 1 Coddington ...ccccccosorsressseeveress 40, i Coddington mounted, i silver oe secsevee- ser eeeeeeees 41, i Stanope ..resereeeee Who Camas MC aaeiesha <aies esa Te aces 4Aca55 42, + in pearl and Silver ....ceeee cee esecereeeecteneeeteeeeeees 43, ‘i s ” 3 crystal lenses, in best flat mounting 2 2 45, Tourmalines, mounted in silver and pearl, for the pocket ...... 18s.to 1 10 46. Telescopes, Achromatic, day and night, 1 foot, 2 feet, and 30-inch ... AT. 6 oa Astronomical, 34 feet and upwards.......0. +. 48, & Reflecting, from 2 to 8 inches diameter ....sssseeer eee eeeees 4.9, 4 Stands, brass, for the table, VaTiOUS ....eesee reese vereereesees 50. x sy WOOd, improved gardeN .isseccecceevevesecvecrereees 51. fe CQUACOTIA] .rsccceceescsersesenreseeneers wig te astenscccens 9 52, Microscopic Gnoneometers, for measuring the angles of object-glasses and specula, (M. C. 223) ssesseccessseseeesceeseeceeceecneeteneneee ces teeues 53. Machines for making thin sections Of WOOdS........sesecessseeeeereceneeeees BA. Knives for ditto .ssccrsceceoceecovetecee cen erevcncecsenssnsesecs concen cee sccereacs 55. Solid Pyramid Opera-glasses, mounted in SilVer....ss.ee eereeeee ere ereeee 56, Prism Telescopes, for exhibiting Fraunhofer’s lines 1+ sserseresseeeeees 57. Pocket Apparatus, for showing the interference of light sssseeeesreeee 58. Telescope and ditto ee ce ‘6 COMPIOCO Ge: sas penn se 59. e i be ® a improved mounting 60, Heliostats, with CloCK-WOrk .cccosssssse-seeeseecreersces ver eaeeeeeerseeeseces 61. Gowland’s Self-adjusting Artificial Horizons ....ssseesesessveerserereee ees 62. Polariscopes, with 5 to 8 crystals .cocsessssesseveneeer ere veenee £2. 2s. to 63. Hs Pritchard’s improved slider......-s0ssssereervee o£ 1 85. to This Polariscope enables the possessor to examine sections of any crystals that present themselves, and to augment their number at any time. 64, Slides, containing three crystallized plates, for exhibiting the systems of coloured rings by.the above instrument, each slide ... 10s. 6d. to 65. Japanned Reflectors, for polarizing Tight’. Wry. ccescessegeuceclesse cae vndede’s 66. Polarizing Prisms mounted to Microscopes, for shewing coloured tints, &c. in minute crystals, (M. 1.) ... ...+.... 30s. to 67. r Stage, Double Object-glass, Tourmaline, &c. for shewing unannealled glasses, selenite devices, system of rings, structure of quartz, &c. by the Microscope, (M.1.) ...
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