92 



NOTES AND QUERIES. 



[No. 169. 



1614. 4to. Portion of Prayer- Book. (3406. c.) 1. 



1615. Fol. (3406. e.) 1. 

 4to. (1276. e. 8.) 1. 



1616. Fol. (1276. k. 3.) 1. ' 

 Fol. (1276. k. 4.) 1. 



1618. 4to. Portion of Prayer- Book. (3407. c.) 



1619. Fol. (3406. e.) 1. 



1628. 8vo. (30,50. a.) 1. 



1629. 4to. (1276. f. 3.) 1. 

 1630-29. Fol. (3406. e.) 1. 

 1631. 4to. (1276. f. 1.) 1. 



1633. 12mo. (3405. a.) 1. 

 8vo. (1276. b. 14.) 1. 



1633-34. Fol. (3406. f.) (With the "Form of 

 Healing," two leaves.) 



1634. 8vo. (3406. b.) 1. 

 1636. 4to. (1276. f. 4.) 2, 

 1639. 8vo. (3050. b.) 1. 



8vo. (1274. a. 14.) 1. 

 1642 (?) 8vo. (1276. c. 2.) 3. 

 1642. 12mo. (3405. a.) 

 1660. 12mo. (3406. b.) 1. 



In Latin we have an early copy in addition to 

 those already noted, viz. : 

 1560. Reg. Wolfe. 4to. (3406. c.) 



Of which the British Museum possesses two copies 



of the same press-mark, one of which is enriched 



with MS. notes and sixteen cancelled leaves. 



Besides the above we have also 



1689. 8vo. London. In French. 



1599. 4to. London. Deputies of Ch. Barker. In 



Welsh. 

 Allow me to take this opportunity of thanking 

 Archdeacon Cotton for his very valuable com- 

 munication. I trust that he and others of your 

 many learned readers will lend a helping hand to 

 the correction of this list, and its ultimate com- 

 pletion ; the notice of the editions of 1551 and 

 1617 (Vol. vii., p. 18.) is as interesting as it is 

 important. It will be perceived that editions of 

 the Prayer-Book referred to in former lists are 

 not enumerated in the present one. 



W. Sparrow Simpson, B.A. 



PHOTOGRAPHIC NOTES AND QUERIES. 



Originator of the Collodion Process. — All those 

 who take any interest in photography must agree 

 with your correspondent (x. C. that M. Le Gray is 

 a talented man, and has done much for photo- 

 graphy. G. C. has given a very good translation 

 of M. Le Gray's last published worh, p. 89., which 

 work I have : but I must take leave to ob- 

 serve, that it is no contradiction whatever to my 

 statement. The translations to which M. Le Gray 

 alludes, of 1850, appeared in Willat's publication, 

 from which I gave him the credit of having first 

 suggested the use of collodion in photography. 

 The subject is there dismissed in three or four 

 lines. I 



M. Le Gray gave no directions whatever for its 

 application to glass in his work published in July 

 1851, wherein he alludes to it only as an " encal- 

 lage" for paper, classing it with amidou, the 

 resins, &c., which he recommends in a similar 

 manner. 



I had, four months previous to this, published 

 the process in detail in the Chemist. I never 

 asserted that he had not tried experiments with 

 collodion in 1849 ; but he did not give the public 

 the advantage of following him: and I again repeat 

 that the first time M. Le Gray published the col- 

 lodion process was in September, 1852, — a year 

 and a half after my publication, and when it had 

 become much used. 



It is obvious that if M. Le Gray had been in 

 possession of any detailed process with collodion on 

 glass in 1 850, he would not have omitted to pub- 

 lish it in his work dated July, 1851. 



F. ScoTT Archer. 



105. Great Russell Street, Bloomsbury. 



G. C, claiming for Le Gray the merit of the first 

 use of collodion upon glass, states that a pamphlet 

 upon the subject was published in 1850, and which 

 was translated into English at the same time. 

 Will he oblige me by stating who publish^.d this 

 pamphlet, or where it may be obtained ? I have 

 heard this statement before, and have used every 

 endeavour to obtain a sight of the publication, but 

 without success. Were the facts as stated by your 

 correspondent, it would deprive Mr. Archer un- 

 doubtedly of the merit v/hich he claims ; but from 

 all I have been able to learn, Le Gray mentioned 

 collodion as a mere agent for obtaining a smooth 

 surface to paper, or other substance, having no 

 idea of making it the sole sensitive substance to be 

 employed. I have been informed that in Vienna, 

 early in 1850, collodion was tried upon glass by 

 being first immersed in a bath of iodide of potas- 

 sium; and it was afterwards placed in a second 

 bath of nitrate of silver. These experiments had 

 very limited success, and were never published, and 

 certainly were unknown to Mr. Archer. 



II. W. D. 



Mr. Weld Taylors Process. — In your 167th 

 Number (Vol. vii., p. 48.) is a communication from 

 Weld Taylor on photographic manipulation, 

 which, in its present form, is perfectly unintelli- 

 gible. At p. 48. he says : " Twenty grains of nitrate 

 of silver in half an ounce of water is to have half 

 an ounce of solution of iodide of potassium of fifty 

 grains to the ounce added." Now this is unneces- 

 sarily mystifying. Why not say : " Take equal 

 quantities of a forty-grain solution of nitrate of 

 silver, and of a fifty-grain solution of iodide of po- 

 tassium ;" though, in fact, an equal strength would 

 do as well, and be quite as, if not more, economical. 



In the next place, he directs that cyanide of 

 potassium should be added drop by drop, &c. It 



