PRUSSIA.
1053
77 Nobeet, P. A., Barth, near Stralsund , Province ofPomerania —Manufacturer.
Glass plates, with divisions, applicable for observationstrith the microscope.
Ocular micrometer for telescopes, with clear lines inthe dark horizon.
7 8 Tiede, Friedrich, Berlin —Manufacturer.
(Agent, Mr. Oertling, London .)
Astronomical regulator, with linchpin and weight ofbrass, hook of wrought-iron, and polished wooden case.Box-clironometer in pieces, in a polished case.
79 Pokorny, J. A., Berlin —Manufacturer.
Bill machine of iron.
Lapis infernalis mould, with twelve grooves.
Bill mortars of iron.
Luhmes’ decoction spirit lamp.
Berzelius ’ lamp, with brass base and plate of china.Improved Berzelius ’ lamp.
Belt rifle-gun and pistol.
80 Westermann & Co., (Broprietor of the firm,
G. Willmanns) Berlin —Manufacturer.
Grand pianoforte (rosewood).
81 LOttig, C., Berlin —Manufacturer.
Levelling instruments.
Dioptric telescope.
Billing machine.
Optometer, for ascertaining the distance of sight intrying spectacle glasses.
Ball and ring to demonstrate the expansion of metalsby heat.
Case of mathematical instruments, of German silver.Case of mathematical instruments, in brass.
Case, with instruments for drawing.
Camera obscura.
82 Baltzee, Adolph, Frankfort on the Oder —Inventor.
An iEolodion, a six-octave keyed instrument, with metalsprings, or tongues, caused to vibrate by means of bellows.The tongues can be tuned several notes higher or lowerby the turning of a key, fixed to a micrometer screw. Acrescendo,” or <c decrescendo,” can be produced by means°f the pedal.
Striking clocks, which go a year.
Pendulum clock, indicating the variation of the time attwenty different places.
[The invention of clocks lias been ascribed to Boethius ,510, but clocks like those now used are of later in-vention. The first on record is one at Bologna, in 1856.Henry de Wyck, a German, made clocks about 1364; the^ature of their machinery is preserved. Clocks were pro-ably introduced into this country about 1368, by Edwardle Third, and became common in the fourteenth century,endulum clocks were invented in 1641, by Richardarris, London . At first, in contradistinction to the sun-c la ls, they were called nocturnal dials.]
^ J. F., & Co., Berlin —Manufacturers,
luoric-acid apparatus of platinum,balance lor chemical analysis.
PP a ratus for the polarization of light: employed forsaccharmo substances.
ir-pump, with oblique action.
J pp s sulphuretted hydrogen apparatus, of glass.j> < ? w I>ipe apparatus of platinum.grai^ s anC:CS ^ or weighing 100 grains, 50 grains, and 25
Platin um bowls.
annum crucibles, with lids.
Berzelius and other chemical lamps, Mohr’s balances ;and a number of articles for chemical, philosophical, andpharmaceutical purposes.
84 Luppold, — , Stettin —Inventor.
Instruments for accoucheurs, composed of steel, ivory,
and German silver, after Professor Busch’s plan, improvedby the exhibitor, by a head-screw, which, by turning theinstrument by means of the liindermost head-screw, canbe easily taken away and replaced.
85 GoLDScnMiDT, S., Berlin —Manufacturer.
An assortment of surgical and philosophical instru-ments, bandages, artificial limbs, syringes, and a magneticapparatus.
86 Reimank, L., Berlin —Manufacturer.
Balance, in a rosewood case, which weighs from one
milligramme to one kilogramme ; that is, from of agrain to 2ilbs. avoirdupois. The middle or suspensionknife-edge rests upon a polished stone, and the scale-knifeedges, &c., are so arranged that the balance can be usedwithout opening the case.
Set of gramme weights, of brass, gilt by galvanic process,from one gramme to one milligramme, with ivory forksand pincettes.
[This balance is remarkable for sensibility, as it turnswith about the millionth part of the extreme weight whichit can weigh; but it is not equal in this respect to thebalance made by Ramsden for the Royal Society , which iscapable of weighing 101bs., and turning with one-hundredthof a grain, or the seven-million th part of the extreme weigl it.The necessity of enclosing such delicate instruments inglass cases is manifest; but even in such circumstancesthey are affected by surrounding objects. Speaking ofRamsden’s balance, Dr. Wollaston is reported to have saidthat when Mr. Bond was making some observations withit, he found its indications affected by his position rela-tively to the arms; the radiation of heat from his bodycausing the arm to which he stood nearest, to preponde-rate.—J. G.]
87 Oertling, August., Berlin —Inventor. (Agent in
London , Mr. Louis Oertling, 13 Store Street.)Chemical balance, with weights.
Balance for chemical and physical purposes, will)weights, containing arrangements to weigh all descriptionsof substances, and to ascertain specific gravity.
Balance for chemical and physical purposes, in largedimensions, with weights.
Hudley’s sextant, 7^-inch radius.
Huclley’s sextant, 5-inch radius.
Reflecting goniometer, of a new constmction after Wol-laston, with improvements by Mitcherlich and Poo-fren-dorf. __
88 Hoffmann & Eberhaedt, Berlin —Merchants
and Manufacturers.
Complete assortment of apparatus and articles forchemical, philosophical, and pharmaceutical purposes.
Balance-beams, bom spatulae and spoons, glass andmetal cocks, test cylinders, blow-pipe, polished spatula),diamond pen to write on glass, stoppered bottles, receiversfor air-pumps and gas, spirit lamps and retorts.
Microscopes. Model of a telegraph for schools. Polariza-tion apparatus, diamond mortar of steel, thermo-electricchain, model of a steam-engine for schools, air pumps,Berzelius lamps, sun-dial for Berlin ; various small articlesin glass, &c., as funnels, corkscrews, &c.
89 Bttscit, E., Rathenow —Manufacturer.
Spectacle settings and glasses.
Telescope settings.
Assortment of lupines, opera-glasses, and daguerreotypeheads.
Large telescope, with loot, and various others. Eartrumpet. 4 G 2