xiv TABLE OF CONTENTS. 



M. TECHNOLOGY (clxxiii) 485 



(a.) THE LIBERAL ARTS. 



Printing : Fixing Designs on Glass, 485; Conversion of Lithographic into 

 Letter-press Plates, 531 ; Mechanical Photographic Printing without a Press, 

 492 ; Photo-stereotyping, 485. Engraving : Photo-engraving, 487 ; New 

 Process of Engraving on Copper, 528 ; Cleaning and Bleaching Old Cop- 

 per-plate Engravings, 486. Lithographing : Paul's New Method of Lith- 

 ographic Transfers, 486 ; Conversion of Lithographic into Letter - press 

 Plates, 531. Photographing: Photo - stereotyping, 485; Photographic 

 Multiplication of Drawings, etc., 488 ; Preparation of Photographic Tracing- 

 paper, 489 ; Direct Photography of the Solar Protuberances, 529 ; the Helio- 

 pictor, 490 ; Preparation of Photographic Dry Plates by Daylight, 529 ; 

 Object-glass for Photography, 530 ; Submarine Photography, 531 ; Increas- 

 ing the Sensitiveness to Light of Bromide of Silver, 491 ; Photographic 

 Irradiation, 543 ; Photo-engraving, 487 ; Mechanical Photographic Printing 

 without a Press, 492. Writing: Black Ink for Marking Boxes, etc., 487 ; 

 a New and Durable Ink, 488; Improved Copying-ink, 488; Vanadate of 

 Ammonia for the Manufacture of Ink, 491 ; Indestructible Ink, 533 ; very 

 Simple and Cheap Fountain-pen, 544; New Method of Making Paper Pulp, 

 518. Drawing : A very Simple Pantograph, 489; Autographic Reproduc- 

 tion of Drawings of Machinery, etc., 532. Modeling and Casting : Im- 

 provement in the Preparation of Plaster Casts, 493 ; a New Material for 

 Modeling (Plastiline), 494 ; Mixture of Plaster of Paris with Marsh-mallow 

 Koot, 535. 



(b.) MECHANICAL ARTS. 



Spinning, Weaving, and Felting : Textile Industry at the Vienna Ex- 

 position, 494; New Manner of Producing Shaded Yarns, 533. Sizing, 

 Dressing, and Water-proofing : Bichromate of Potash in Dressing for 

 Fabrics, 495 ; Stiffening Gauze, 496 ; Starch for Rendering Clothing In- 

 combustible, 496; Weather-proof Wash for Wood, 497; Water -proofing 

 Linen, 497; Rendering Hose for Fire-engines Water-tight, 498; Weather- 

 proof Coating for Zinc, 534; Water-proof Composition for Coating Fabrics, 

 534 ; Preparation of Starch Paste, 534 ; a Paste Superior to Gum Arabic, 

 541; Water-proof Tissue-paper, 489. See also Cements and Adhesives. 

 Cleaning and Bleaching : Bisulphite of Soda for Counteracting the Ef- 

 fects of Chlorine in Bleaching, 498 ; Bleaching of Shellac, 436. Drying : 

 Bastaert's Process for Drying all Kinds of Fabrics, 501. Painting, Stain- 

 ing, and Varnishing : Galenite, a New Material in Painting, 507 ; Var- 

 nish for Alcohol Casks, 508 ; Varnish affording a Dead Surface on Drying, 

 508. 



Dyeing: Naphthylamine Colors for Printing on Fabrics, 504; Method 

 of Coloring Veneers, 507 ; Effect of Alkalies on Cotton and Linen Goods, 

 527; Soluble Sesquioxide of Iron in Dyeing Silk, 536; Weighting Silk 

 with Sulphate of Baryta, 537 ; Extract of Sumac, 499 ; Ccerulignon, from 

 Wood - tar, for Printing Fabrics, 506 ; New Material for Dye-stuffs, 538 ; 

 Methyl Violet on Wool, 499 ; Violet Oil-pigment for Printing on Fabrics, 

 505 ; Baryta Green, or Manganate of Baryta, 499 ; Aniline Green on Wool, 

 503; Dark Green on Half- Wool Garments. 504; Economical Indigo Cold- 



