AMATEUR PHOTOGRAPH?. 



245 



top of albumen paper, put at least 2 thick- 

 nesses of tissue paper on front of the frame, 

 put on printing paper, and print square in 

 the sun. If it shows a line, add another 

 tissue. This will print much faster than you 

 think, will not give you any bother and is 

 guaranteed to work every time, if the film 

 is not broken. If you have no albumen 

 paper, use the baryta coated paper that 

 comes around Aristo paper. 



Will you please answer the following 

 questions: (1) What can be used to pre- 

 vent films from curling after being dried? 

 (2) I believe I have seen an article some- 

 where stating that glycerine, mixed in the 

 hypo, will prevent curling. If so, please 

 state what proportions are to be used. (3) 

 Also, please give correct amount of hypo 

 to be used in 8 ounces of water. 



F. H. G., Chicago. 



ANSWER. 



(1) Methylated spirits rubbed on the 

 back of the film. (2) One part glycerine to 

 30 parts hypo. Better use glycerine in the 

 water after the hypo. (3) 2 ounces of hypo. 



The owl, of which I send photo here- 

 with,* was a live specimen, and you would 

 have thought so if you had been with me 

 when I made the picture. Just as I was 

 ready to snap the shutter he w ? ould fly, and 

 then it took a long time to get him in 

 position again. I finally got him on the 

 third trial. 



I have taken a number of photos of 

 birds and animals for my collection, and 

 am going to get a telephoto lens, to go 

 with my long focus camera. 



Clinton A. Smith. Fredonia, Kan. 



PRINTING ON SILK. 

 Wash the silk in warm water and float 

 for 2 minutes in the following solution: 



Salt 10 grains 



Ammonium chloride 10 grains 



Water 1 ounce 



Ammonia 15 drops 



Then hang silk up to dry. Sensitize in 



Silver nitrate 150 grains 



Water 1 ounce 



After floating in this for 2 minutes, dry 

 print deeply and tone in ordinary manner. 



I An apparatus has been invented by J. 

 Landsing, of Brooklyn, which has for its 

 object the development of plates in the 

 field, without the necessity of a dark room. 

 A special plate-holder is furnished, which 

 has means for ejecting the dry plate into 

 a sealed trough, into which can be intro- 

 duced in succession developing and fixing 

 solutions. This apparatus should prove 

 useful, not only in the field, but in the 

 *See cover of this issue, 

 



home, dispensing, as it does, with the nec- 

 essity for the dark room and its accom- 

 panying inconveniences. 



Formula for making plain prints on 

 drawing paper: Salting solution — Chloride 

 of ammonium, 50 grains; gelatine, 100 

 grains; water, 10 ounces; warm and add 

 2 ounces of negative varnish. Sensitizing 

 solution: Nitrate of silver, 2 ounces; wa- 

 ter, 10 ounces; chloroplatinite of potassi- 

 um, 15 grains; citric acid, 50 grains; wa- 

 ter, 25 ounces. Fixing solution: Hypo- 

 sulphite of soda, 2 ounces; water, 10 

 ounces. The results are said to be remark- 

 ably fine and of black tone. 



Will you please give me through Rec- 

 reation the best formula for Aristo single 

 and Aristo double toner, used for toning 

 Aristo platino paper? 



Ed Francis, Arcanum, O. 



ANSWER. 



Single: The formula was in August or 

 September Recreation and is good. 



For double toner use: Gold chloride, 1 

 grain; carbonate of soda, 3 grains; borax, 

 15 grains; water, 10 ounces. Mix in order 

 named into the water. 



Developer as contained in the tubes of 

 "M. Q." (metol-hydrochinon) for Velox 

 papers: 



Metol 12 grains 



Hydrochinon 48 grains 



Sulphite sodium, C. P. 

 (desiccated) 192 grains 



Carbonate of soda, C. P. 

 (desiccated) 320 grains 



Bromide potassium 4 grains 



Water 20 ounces 



The depth to which the sun's rays pene- 

 trate water has^ been recently determined 

 by the aid of photography. It has been 

 found that at a depth of 553 feet the dark- 

 ness was to all intents and purposes the 

 same as that on a clear and moonless 

 night. Sensitive plates exposed at this 

 depth for a considerable length of time 

 gave no evidence of light action. — Revue 

 Phot. 



A German medical paper reports it has 

 been experimentally proved that X rays 

 can be used for the removal of disease as 

 Avell as for its diagnosis. Experiments 

 have been made by Dr. Reider with aston- 

 ishing success, cases of chronic eczema and 

 other diseases being cured. If the results 

 are confirmed there will be a much wider 

 field of usefulness for the rays and a great- 

 er demand for apparatus. 



Don't use mucilage to gum down your 

 prints. Mucilage is — well — nobody knows 



