March 20th, ipiy.] PROCEEDINGS. xxi. 



Ordinary Meeting, March 20th, 191 7. 



The President, Professor SYDNEY J. HiCKSON, M.A., D.Sc, 

 F.R.S., in the Chair. 



Professor "Weiss presented a paper " On the contents of 

 a herbarium of British and foreign plants for presentation 

 to the Victoria University of Manchester.'" By Mr. Charles 

 Bailey, MjSc, F.L.S. 



Professor Weiss exhibited some sample sheets, showing the 

 method of arrangement observed by Mr. Bailey in his herbarium, 

 and emphasised the great ^value which sO' well ordered and exten- 

 sive a collection would be to all students of ^botany in the district. 



This paper is printed in full in the Memoirs. 



General Meeting, April 3rd, 191 7. 



The President, Professor Sydney J. HiCKSON, M.A., D.Sc, 

 F.R.S., in the Chair. 



Mr. Herbert Edward Soper, M.A., Electrical Enoineer, 

 of 81, Moston Lane, Failsworth, was elected an ordinary member 

 of the Society. 



Ordinary Meeting, April 3rd, 191 7. 



The President, Professor Sydney J. Hickson, M.A., D.Sc. 

 F.R.S., in the Chair. 



Mr. R. B. FiSHENDEN, M.ScTech., read a paper cntided 

 " Illustration Processes used in (Scientific Publications." 



Mr. Fishenden stated thati although type is almost invariably 

 used fojr printing the letterpress portion of a book or paper, 

 theire exist other essentially different printing processes — litho- 

 glraphy a(nd intaglio^ printing— which are occasionally use'd for 

 {Dtrinting type characters. Illustrations are commonly printed by 

 all three processes, acoordiing to the nature of the result desired, 

 but if both type [and illustration are prinited in one operation, the 

 cost is less thain if either of the other two processes is used for 

 " supplement " illustrations. 



Suitable printing surfaces may be prepared from the original 

 drawings or photographs by trained craftsmen, who engrave the 

 siJlbjects, ojr, in the f;ase of lithographic work, re-draw them. 

 These processes are relatively slow and costly and have been 

 largely superseded by photographic processes of reproduction ; 

 the latter, however, demand that the original drawings shall be 



