SCIENCE- G OSSIP. 



CONDUCTED BY B. FOLLKES-WINKS. M.R.P.S. 



EXPOSURE TABLE FOB JANUARY. 



The figures in the following table are worked oat for plates of 

 about 100 Hurter & Driffield. For plates of lower speed number 

 give more exposure in proportion- Thus plates of 50 H. & D. 

 would require just double the exposure. In the same way, 

 plates of a higher speed number will require proportionately 

 less exposure. 



Time, 10 a.m. to 2 P.M. 



Between 9 and 10 a.m. and 2 and 3 p.m. double the 

 required exposure. 



Scbject F. 5-6 



F. 8 



F.ll 



F.16 



F. 22 F.32 



M 



F.64 



Sea and Sky 



1 



^V 



-_"- 



r \ 



i 



1 



Open Landscape i 1 

 and ShippLni- 



A 



1 



- 



1 



9 



4 



Landseape.with \ 

 dark fore- I 

 ground, Street 

 Scenes, and l 

 Groups . . J 





i 



1 



2 4 



8 



16 



Portraits in J ft 

 Booms . . J 



16 



32 — 









Light Interiors 16 



32 



1 2 



4 8 



16 



32 



Dark Interiors 1 



2 



4 8 



16 32 



64 



128 



The small figures represent seconds, large figures minutes 

 The exposures are calculated for sunshine. If "the weather is 

 cloudy, increase the exposure by i as much again, if gloomy 

 double the exposure. 



Exposure Tables. — I am exceedingly pleased 

 to notice that Science-Gossip is recognising those 

 amongst its readers who have taken to photography, 

 and that the editors are catering for them and 

 placing this section under the care of Mr. Foulkes- 

 Winks. Possibly you will be inundated with 

 suggestions, and perhaps these, for the time being, 

 cannot be considered apart from the plans you 

 have already decided to follow. If one more 

 suggestion is acceptable, might I ask that you 

 provide us with a concise monthly table of ex- 

 posures ? I know that an actinometer is the best 

 to use. but a table which would be approximately 

 correct would be extremely useful. Amateur 

 photographers could then from month to month 

 follow its variations, and become ultimately good 

 .judges without such aids. Thanking you in 

 anticipation of giving this suggestion your favour- 

 able notice. — Thomas W. Bron?n,SOB Church Lane, 

 Old Charlton. Kent. 



[We have pleasure in adopting our corre- 

 spondent's suggestion, and, as will be seen above, 

 have now commenced the monthly table. — Ed. 

 Photo.. S.-G.~\ 



Printing by Gaslight. — In the dull weather 

 and long evenings that we get during the month of 

 January, the value of printing on bromide paper is 



appreciated by all. There are a great number of 

 bromide papers on the market, such as platino-matt. 

 bromide velox. gravura, etc., but for rich black 

 tones on a matt surface we have never seen any- 

 thing to surpass if indeed to equal the " New 

 Gaslight Bromide " paper of the Imperial Dry Plate 

 Company. This is a very slow bromide paper, and 

 most suitable for contact printing. We have found 

 an exposure of 16 seconds, eight inches from an 

 incandescent gas-burner, sufficient for a negative 

 of average density. The developer we prefer is 

 made up as follows : — Amidol, 100 grains ; sulphite 

 of soda, 3 ounces : bromide of potass. 30 grains : 

 distilled water to make up to 20 ounces. This will 

 give a very rich black tone. If a greyer tone is 

 required, dilute the developer with an equal 

 quantity of water. When the print is sufficiently 

 developed, transfer direct to the fixing solution, 

 which should be made as follows : — Hyposulphite 

 of soda. 2 ounces; sulphite of soda, 2 drams; 

 sulphuric. 2 or 3 drops; water. 20 ounces. The 

 prints should remain in the fixing bath for at least 

 ten minutes. A longer immersion will do no 

 harm. Conduct all operations in a pale-yellow 

 light. After fixation is complete, wash the prints 

 in running water for an hour, when they will be 

 ready to take out of the water and dry. 



National Photographic Record Associa- 

 tion. — At the last Council meeting of the above 

 Association 366 photographs were presented from 

 all parts of the kingdom, forming a valuable 

 addition to the collection, recording as they do 

 some of the most interesting subjects, both from 

 an antiquarian and historical point of view. The 

 President. Sir J. Benjamin Stone, M.P., sent in 100 

 prints taken in Warwickshire, including a series" of 

 Stratford-on-Avon and an interesting record of 

 collecting the '• wroth money"' at sunrise at Ryton- 

 on-Dunsmore. Mr. Sulman gave a set of the Old 

 Historical Houses of Honisey and Highgate, many 

 already removed; 103 from Geo. Scamell, Hon. 

 Sec. of the Historical Houses of London, and 

 the old Sussex Churches, including Bosham. 

 Sompting. Shoreham. &c. ; some of Old Newgate 

 by Mr. T. Bolas. Canonbury Tower and other 

 contributions were by E. Scamell ; Worcester 

 Cathedral by F. Littledale ; many especially inter- 

 esting records of Irish Life and antiquities by 

 Mrs. Muriel and A. Hogg, the latter sending a 

 particularly fine series of the Tumulus of New 

 Grange, the interior views being splendid speci- 

 mens of flash-light work. The Rev. A. C. Hervey 

 contributed an interesting set of photographs of 

 the Old Parish Register showing extract of Act 

 for burying in woollen— affidavits that such had 

 been done — and another page certifying that 

 certain families had paid the penalty of £o that 

 their friends might be buried in linen. Mr. Claric 

 forwarded a set of old crosses at Llantwit Major : 

 Mr. Calcott an interesting record of many of 

 the Old Houses of Bristol, several of which have 

 been already removed ; Mr. Felce a fine series of 

 Norman Capitals and Misereres in the Northamp- 

 ton Churches ; Mr. Hodgson a long record from 

 Kingston-on-Thames : and Mr. F. Parkinson a very 

 complete set of the Easter Sepulchre at Hecking- 

 ton Church. These photographs have now been 

 forwarded to the British Museum, and together 

 with those already deposited make up a collection 

 of nearly 1,600 prints contributed by members 

 of the Association. — Geo. Scamell, Hon. See., 21 

 J venue Road. Highgate. 



