48
Professor C. Mussisi, of Florence (37, p. 129i)> ob-tained Honourable Mention for colours, mixed with apeculiar preparation, which prevents the action of the sunand the effects of moisture. The colours are used forencaustic painting and painting in fresco.
William Naylor (35, p. 191) exhibited various var-nishes of copal, sandarach, and mastic, and also speci-mens of deal wood stained in imitation of different woods,without the usual sizing.
Nissen, Hillary, and Parker (36, p. 191), exhibitedtinted paper, chemically prepared in the pulp, for print-ing cheques upon.
W. G. Nixey (112, p. 199) exhibited a specimen ofcement.
K. Okiiler, of the Grand Duchy of Hesse (8, p. 1120),received Honourable Mention for his products of gas-tar,obtained by fractional distillation. The term “creosote,”is applied rather indefinitely, in Germany , to substanceswhich may have an equal medicinal value, but differ con-siderably in properties. The crystallized creosote of thiscollection is hydrate of phenyl. The colourless oil ap-pears from its odour to be chiefly benzole.
Charles Owen, of Edinburgh (83, p. 19G), exhibitedspecimens of pure cod-liver oil.
Robert Oxland, of Plymouth (225 and 4$5, Class I.,p. 143, 172), exhibited a variety of products derivedfrom the distillation of peat in cast-iron retorts, whichreceived Honourable Mention. The process invented In-Mr. Oxlaud for the separation of tungstic acid from theores of tin, by the action of sulphide of sodium and for-mation of soluble tungstate of soda, in a reverberatoryfurnace, also received the commendation of the Jury.Specimens of sugar were likewise exhibited, refined bymeans of acetate of alumina.
S. Oyler (113, p. 199) obtained Honourable Mentionfor excellent lint for surgical purposes, which he exhi-bited.
W. Parrott (46, p. 192) exhibited illustrations, inoil and water colour, of a new brown, derived from thesmut of corn, discovered by him, and recommended fromhis experience of it as an artist.
William Watson Pattinson, of Gateshead, New-castle-upon-Tyne (18, p. 189), in partnership with aJuror of this Class, exhibited large masses of crystal-lized alum, masses of the simple sulphate of alumina,known in commerce as “ concentrated alum,” with aspecimen of bicarbonate of soda, prepared by exposingcrystals of the carbonate to carbonic acid gas. All weremanufactured at the Felling Chemical Works.
Otto Pauli, of Carlsruhe (32S, Zol. 1, p. 1069), hadthe Prize Medal awarded to him for his phosphorus andother chemical products. The substances exhibited -werechiefly derived from bones and animal matters, and in-cluded sal-ammoniac and the ferrocyauide of potassium,beautifully crystallized. The last .salt was remarkablefor its pale sulphur colour, au indication of value, as itarises from the entire absence of the red salt, which, insome dyeing processes, makes the colour appear dull byforming the green cyanide of iron. The annual produc-tion of prussiate of potash, in this old and increasingestablishment, is about 80 tons; of sal-ammoniac about20 tons ; and of phosphorus 80 cwt.
G. Peacock, of Southampton Docks (73, p. 195), ex-hibited wood, preserved by a chemical process peculiarto himself.
Pellegrini Sneider, of Rome (3, p. 1285), exhibitedthe native alum of the Roman States, purified by crys-tallization, showing that this ancient manufacture stillmaintains its ground, in competition with the enormousproduction of the same salt by the artificial processes.
Moses Haim Picciotto (33, p. 190, 191) obtainedHonourable Mention for specimens of gum-arabic, de-colorized and purified by means of sulphurous acid.
Pinto, Perez, and Co. (121, p. 199), exhibited veryfine acetate of lead, which received Honourable Mention.
Thomas Cadby Ponting (25, p. 190) exhibited a mark-ing ink.
PoxTiFEX aud Wood (1, p. 185) obtained the PrizeMedal for specimens of various colours and pigments‘employed by artists and paper-stainers, and for other
chemical products. The crystallization of their tartaricand citric acids was truly magnificent, and also theirsulphate of copper. They likewise exhibited a series ofinteresting chemical and metallurgical products, illus-trating the different processes of separating lead from itsores, and its subsequent conversion into white lead.
Poortman and Visser, of Schiedam, in Holland (2,p. 1142), one of the oldest houses in the white lead trade,obtained Honourable Mention for the superior quality ofthe samples of that substance which they exhibited.
M. Pound (108, p. 198) received Honourable Mentionfor the new drug, “ Indian bael,” the fruit of the Bengalquince, which he has introduced; and for other phar-maceutical preparations.
Powers and Wigiitmax, of Philadelphia, United States (262, p. 1452), had the Prize Medal accorded to themfor a large and valuable collection of chemical sub-stances; among which appeared piperin, narcotine, mor-phine, the valerianate of morphine, and a large quantityof a substance said to be menispermine.
A. Prat and F. Agart>, Aix (Bouches du Rhone ) (1 682,p. 1257), exhibited (iu illustration of the process of M.Balard for extracting potash from sea-water, for whichthe Council Medal was awarded) specimens of thevarious salts contained in sea-water; chloride of sodiumin large crystals, obtained from spontaneous evaporation;and the same in a granulated condition, for table use, bydissolving in a hot solution of chloride of magnesium,and cooling.
The Rev. J. B. Rkade, of Stone Vicarage, Aylesbury(3a, p. 185), exhibited eyaniodide of iron, a new varietyof soluble Prussian blue , and pure iodide of potassium.In the composition of the former substance, iodine issupposed to play the part of oxygen or cyanogen.
Reeves and Sons (7, Class XXX., p. 821) exhibitedvarious water-colours, prepared with wax, and other pig-ments, which received Honourable Mention.
Richardson Brothers and Co. (19, p. 189) exhibitedspecimens of refined saltpetre, or nitrate of potash, ob-tained chiefly from the East Indies. The Bengal nitre,so refined, is a remarkably pure potass-salt.
Professor Michell Ridolfi, of Lucca (36, p. 1294),had the Prize Medal accorded to him for his improve-ments in the colours for encaustic painting; which wereaccompanied by paintings executed by him to show theeffects of the colours.
E. Riley (123, p. 199) exhibited liippuric acid, pre-pared iu large quantity.
W. Robertson, of Banff (81, p. 196), exhibited cod-liver oil, said to be extracted by steam-heat, and renderedalmost colourless without the use of charcoal, or anyother decolorizing agent; also skate-liver oil, manu-factured in the same maimer, which is preferred bysome to cod-liver oil for medicinal use.
Robertson and Co. (6, Class XXX., p. 821) exhibitedvarious colours for artists, which received HonourableMention.
J. Rocers (240, Class I., p. 143) exhibited variousproducts of peat, which received Honourable Mention.
F. Koilr, of Wiesbaden, Nassau (7, p. 1132), was anexhibitor of ultramarine, distinguished by a Prize Medal.
— Roohaz, of Miilheimon Ruhr(l Zoll. 452, p. 1076),exhibited white oxide of zinc of good colour, produceddirectly from German calamine.
C. P. H. Rosselet, of Paris (1452, p. 1245), exhibiteda chemical preparation for restoring gold and silver em-broideries, with illustrations; which received Honour-able Mention.
Kowxey and Co. (3, Class XXX., p. 820) exhibitedthe pigments used in oil and water-colour painting, withseveral new colours, which received Honourable Mention.
The Royal Saxon China Manufactory, at Meissen (p. 1112), first prepared ultramarine in Germany ; andhas exhibited samples of remarkable beaut}-, for which aPrize Medal has been awarded.
The Royal Saxon Smalt Works, at Schneeberg(p. 1105), contributed specimens of their well-known pro-ducts.
Russell and Robertson, Holytown, Lanarkshire (59,p. 193), exhibited specimens of white lead, said to be pro-