Dr. Geerts gives (_Trans. Asiatic Soc. of Japan_, vol. iv., p. 40), for the alloy used in one of the largest mirror-foundries in Kioto: Copper 80 Tin 15 Lead 5 ---- 100 ---- And for mirrors of inferior quality: Copper 80 Lead 10 Shirome 10 ---- 100 ---- Shirome is a natural sulphide of lead and antimony from Choshiu or Iyo. Professors Ayrton and Perry (_Proc. Roy. Soc._, 1878) give: For mirrors of first quality: Copper 75·2 Tin 22·6 Iyo Shirome 2·2 ------ 100·0 ------ For mirrors of second quality: Copper 81·3 Tin 16·3 Iyo Shirome 2·4 ------ 100·0 ------ For mirrors of third quality: Copper 87·0 Tin 8·7 Iyo Shirome 4·3 ------ 100·0 ------ For mirrors of fourth quality: Copper 81·3 Tori Shirome 16·3 Iyo Shirome 2·4 ------ 100·0 ------ For mirrors of fifth quality: Copper 71·5 Tori Shirome 28·5 ------ 100·0 ------ The mercurial amalgam used in polishing the mirrors consists, according to Dr. Geerts (_op. cit._), of quicksilver, tin, and a little lead. Ayrton gives it as one of tin to one of quicksilver. Champion and Pellet (_op. cit._) give the composition as: Tin 69·36 Mercury 30·0 Lead 0·64 ------ 100·00 ------ [Illustration] _On the occasion of the delivery of this discourse the Author exhibited a collection of thirty-four Japanese mirrors, and by the aid of a lime-light lantern displayed their magic properties upon a translucent screen. He also exhibited sundry experiments with Laurent’s apparatus, and showed the effect of heating mirrors._ [Illustration] O. V. A BIBLIOGRAPHY OF THE PRIVATELY PRINTED OPUSCULA _Issued to the Members of the Sette of Odd Volumes._ “Books that can be held in the hand, and carried to the fireside, are the best after all.”--_Samuel Johnson._ “The writings of the wise are the only riches our posterity cannot squander.”--_Charles Lamb._ =1.= =B. Q.= A Biographical and Bibliographical Fragment. 22 Pages. Presented on November the 5th, 1880, by His Oddship C. W. H. WYMAN. 1st Edition limited to 25 copies. (Subsequently enlarged to 50 copies.) =2.= =Glossographia Anglicana.=