ruby holes, which goes thirty-two hours, showing thehour, day of the week, and day of the month. It iswound up and set to time without a key, by the smallbuttons on the outside, and regulated by the index atthe end. As the narrow space does not allow many wheels,this has one less than the usual number, and it has nobarrel: it is set in motion by a worm-spring in the holder.
79 Patio, JunodAleh., Geneva —Manufacturer.
Gold watches, l’epine mechanism, free escapement, andlever spring, thirteen rubies, compensated balance-wheel,copper-inlaid wood and scale case, and a gold key.
Gold watches, with a double case, l’epine mechanism,cylinder escapement, eight rubies, a scale case, gold key,Turkish dial, and a Roman dial.
80 Felcblin, Ciiaeles, Berne —Manufacturer.
Bass clarionet, of improved construction, made of box-wood, inlaid with ivory, having 17 brass keys, the nib ofgrenadille wood the binding plated.
Boxwood clarionet (C. B flat), inlaid with ivory,13 plated keys, improved construction, with two nibs,and plated binding, in a case. Ebony flute, inlaid withivory, silver groove, 10 plated keys, in a case. '
[The basset horn, bass clarionet, or English horn, islittle known in this country. It was invented in 1770, byTheodor Lotz , of Bresburg. It is a common practice inGermany to have two hole pieces of different lengths forthe same clarionet; hence the description C B flat.—H. E. D.]
81 Hommel-Esseb, Feedeeic, Aarau, Canton of
Argovie —Manufacturer.
A complete case of mathematical instruments, made ofGerman silver and English steel. The compasses openwith a peculiar and equable movement, and the workman-ship of all the joints, screws, &c., adapt them for describingsmall circles, &c., accurately. The drawer at the bottomis for the reception of India ink, colours, pencils, &c.
Pair of pocket compasses, of fine German silver andEnglish steel; open in a case to show the construction.
[The study of mathematical and physical sciences aremuch pursued in Switzerland , and many of the cantonsdeservedly enjoy a high reputation for the manufacture ofoptical and physical instruments, especially those of Aarau ,Geneva, and Zurich . There are many eminent mathe-matical instrument manufacturers in the Canton ofArgovie , whose instruments are much sought after, fortheir beautiful finish and moderate price.
Almost all the towns of Switzerland possess workshopsfor the construction of musical instruments. Pianos andother instruments are exported. The trade in musicalboxes is special to the watcli-making cantons. Geneva and the small town of St. Croix, in the Canton of Vaud ,are the principal seats of this trade.—D. C.]
82 PiiEY, Adolphe J. G., Geneva —Manufacturer.
Two upright trichord rosewood pianofortes, one withoblique strings, seven octaves, and metallic hammers.
83 Gay & Luquin, Geneva —Inventors.
Complicated musical box, imitating a military band,plays six modem tunes, the barrel is nineteen inches long,and three inches four-tenths in diameter; it contains alsoharmonic tones, a drum, tw r o castanets, twelve small bells,and a large drum, which are not seen; with a carved boxand moveable glasses.
84 Goldschmid, James, Zurich —Manufacturer.
Planimeter, by M. Wettli, for calculating mechanicallythe area of planes, whatever may be their figure.
85 Gisi, F., Aarau, Canton of Argovie —Manu-
facturer.
Complete case of mathematical instruments of the finestquality, made of German silver.
86 Huebschee, Cheistian, Schaffhausen —
Manufacturer.
Bugle trumpet, with cylinder valves. Trumpet in C,with same valves.
87 Hueni & Hijbebt, Zwrich —Inventors and
Manufacturers.
Patent harpsichord pianoforte, of peculiar mechanism,based upon a calculation of the spring tension: thenumber of parts to a key are reduced to 26, by whichmeans the touch is said to become more elastic, and thesound fuller.
[Harpsichords are provided with quills in place ofhammers to sound the strings. The pianoforte was firstinvented by Christopher Gottlieb Schroter, 1684. Thedampers were introduced by Leuker, 1765. The firstsquare pianoforte was made by Wagner, 1774.—H.E.D.]
88 Keen, James, Aarau, Canton of Argovie —
Manufacturer.
Mathematical cases of German silver; and of brass.
89 Kuetzing, Chaeles, Berne —Manufacturer.
A grand pianoforte; the wrest and hitch-pin blocks areof iron, which increases the sound, and renders the tuningmore permanent.
90 Lecoultee Beothees, Brassus, Canton of Vaud .Musical box, plays four overtures, with two key-boards.
Musical pianoforte, plated box, inlaid work, and glass.
91 Lettba, Heney, sen., Bale— Manufacturer.
Two travelling clocks, furnished with an alarum, &c.
92 Golay-Leeeohe, Augustus, Geneva .
Pocket chronometer with repeater and thermometer,
gold hunting case ; this chronometer possesses a stop inthe balance-wheel to take accurate time. This stop, thekey of which is placed under the cover of the case, toprevent its moving accidentally, is so arranged as to stopat once the balance-wlieel without danger to its pivots.
[It requires some experience to note the exact time atwhich any phenomenon takes place, but certainly the bestplan of doing this, is that adopted by astronomers, whotake a second from their clock, and count the beats by theear, while the eye observes the object of observation, andby this way, the time of any phenomenon is noted to asmall fraction of a second. Stop-watches are intended forinexperienced observers, and such watches have usually alarge seconds-hand upon the dial, which is stopped withmore or less accuracy, by pressing some part of themechanism, at the moment the phenomenon is observed—J. &.] __
93 Lombaed-Janpeu, Chaeles A., Geneva .Wooden leg, used either for amputation below or above
the knee; with girdle and straps.
94 Lutz, , sen., Geneva —Inventor and Manu-
facturer.
Ilair springs, exhibited for their elasticity and tenacity.Hair springs specially suited to marine and otherchronometers Hair springs, intended to resist the effectot heat and cold m altering their shape
95 Masset, Lotjis, Yverdon , Canton de Vaud —
Inventor and Manufacturer.
Patent planetarium, accompanied by a new method ofexplaining astronomical phenomena by the real motionsof the planets, without reference to their apparent motions.