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603 II of be Dry collodio-bromide Alcohol Ether ... 80 grammes 50 c.c. ing mixture should be prepared: — Collodio-bromide emulsion ... Solution of cyanin, 1 :150 ... Glycerine 100 c.c. 10 „ 1 Solution No. Nitrate of silver (crystal) ... Distilled water Solution No. I Bromide of ammonium Distilled water' ... ... Alcohol (absolute) ... Thick 4 per cent, collodion... Acetic acid ... ... ... though this word is used, certainly with no want respect, by the old poet Gascoigne:— “ O Israel! O household of the Lord ! O Abraham’s brats ! 0 blood of blessed seed ! ” as pictures of the said brats would on no account The action of excess of silver nitrate in the dyed emulsion is very remarkable also in the collodion process. If 51 milligrammes of silver nitrate are added to each 100 c.c. of the emulsion, the sensitiveness of it will be increased at least two times. To obtain a highly colour-sensitive emulsion dyed with eoside of silver, proceed as follows. A raw emulsion is at first prepared by dissolving 6 c.c. of collodio-bromide in 40 c.c. of absolute alcohol and 66 c.c. taken. Of such a kind was the originality of a docu ment which adjured ladies not to come for their portraits with their back hair done in the present hideous fashion. Of such a kind was the originality, dictated not by the charity which thinketh no evil, advising the public not to be misled by the specious pretensions of a rival who had “ hired for a studio a second-hand stable.” 64 grammes 80 c.c. 800 „ 1,500 „ 65 grammes To render the emulsion colour-sensitive, a certain quantity of picrate of ammonia and glycerine, and the solution of the dye, is added to it. In the case of cyanin, the follow- for by “ pars ” about a certain accomplished artist and his admirably arranged studio. . Circulars displaying phosphorescent photographs, or pictures of people luminous in the dark—people who have never been known to shine, like the above-men tioned celebrities, in the light—have doubtless had their day, and equally without doubt produced a com fortable income for their originators. Circulars arousing interest by their crafty commence ment are not, perhaps, far distant from a photographic fraud. They begin by setting forth the advantages, mental and bodily, of a trip (say) to Rosherville, and conclude with the delight and profit of taking a snap shot at everything on the way by the “ Rattlesnake ” camera, only to be procured of the sole manufacturers and patentees, &c. Photographic circulars of this nature are already too numerous; but it is difficult to refrain from mentioning expressly the device of an ingenious gentleman who sold several pictures of a crowned head by the following announcement:—“ On the 18th inst., about twelve hours before midnight, a man was seen to level a double-barrelled camera at His Majesty, who, finding all resistance in vain, at once surrendered, and was borne in triumph to , where he is now on sale in the shape of an exquisitely mounted carte at eighteenpence the dozen.” Though originality is pleasing in a circular, origin ality in some of its multiform varieties is hardly likely to effect its purpose of a ready sale. Of such a kind was the originality in a circular which cautioned mothers not to bring their young children—called, somewhat impolitely and contemptuously, “brats,” PHOTOGRAPHY IN GERMANY. BY HERMANN E. GUNTHER. TRANSFERRING Albumen Prints to Wood, Metal, &c.— Orthochromatic COLLODIO-BROMIDE Emulsion—In creasing the Sensitiveness oe Asphaltum. To Transfer Ordinary Albumen Prints to Wood, Metal, Glass, or Porcelain, it is, according to Photographic, sufficient to thoroughly clean the surface to which the image is to be transferred, if it is a polished or a glossy one, and to smooth it if it is a rough one. It is then coated with a thin layer of copal varnish, and the toned and fixed albu men print is placed upon it whilst still wet. All the air bubbles and the excessive varnish should be pressed out by means of a squeegee or an india-rubber roller, and then the whole allowed to dry for about four hours. After this time the back of the print is moistened by means of a sponge, when it may be lifted off its support, whilst the albumen film, together with the picture, remains on it. The image is then coated once more with copal varnish in order to protect it and to render it more brilliant. A reversed transfer is obtained in this way. If, however, gelatine negatives which can be stripped from their glass support, or transparent films, are used, a reversed print may be made on albumen paper, and this one transferred in the manner described above. Orthochromatic Collodio-Bromide Pmulsion.—At the sugges tion of Professor Eder, Dr. A. Jonas has worked out a method for making orthochromatic collodio-bromide emulsion similar to that introduced some years ago by Dr. E. Albert. The results of this important work have been published by Dr. Jonas in extenso in No. 370 of the Photo. Correspondenz. The following two solutions are prepared : 6 grammes 40 c.c. 60 „ The silver nitrate is dissolved by heat, and an aqueous concentrated solution of ammonia (spec. grav. 0’91) is carefully added in small portions, until the brown precipi tate first formed is again just dissolved. About 75 c.c. of ammonia will be required for this purpose. Finally, 800 c.c. of warm alcohol (113° F.) are added. Both solutions may be prepared by daylight. In the dark room, which should be illuminated by orange light, solution No. II. is poured into solution No. I. in a thin stream, shaking violently all the time. The temperature of solu tion No. II. should be kept at from 104° to 122° F., because otherwise ammonio-nitrate of silver will crystallise out. A drop of the emulsion thus prepared is then brought into contact with litmus paper, and if it be alkaline, acetic acid should be added drop by drop until the emulsion gives a slightly acid reaction. It is then shaken for a quarter of an hour, allowed to stand for an hour, and then poured into five or six times the quantity of water. The precipitated emulsion is collected on a clean linen cloth, and the latter hung in running water for one or two hours. Finally, the superfluous water is gently pressed out, the emulsion washed several times with distilled water, pressed out once more, and spread out on thick blotting-paper to dry. For use, dissolve—