The Montgomery advertiser., 1904-10-02
INTO NEW QUARTERS
DEPARTMENTS OF THE ADVEH-
 TIsER ARE MOVED.
Engraving Plant, News Rooms Telegraph Onice Transferred 'o the Additional story Just
 Completed.

The additional story to lhe f1u,oI tiser building for the accommodation oI the engraving department ana lnY ! state ana foreign news department ana telegraph room has been completed. Yesterday the department moved in- l to their new and comfortable quarters and the engravers are already pre- pared for business.
 The work of a modern engraving plant, one equipped as the plant oA The Advertiser Engraving Depart ment Is. with all the aids that science has furnished the engraver. is nldaeh mystery to nine out of ten or the average readers. The man who smiles at some particularly good cartoon or admires the pictured counteneance or some beautiful woman often wonders how the engravers results are achi- eyed.
 The process by which a photograph or a drawing is transferred to lhe printed sheets of newspaper is rath- CT complicated. It Is known techni- cally as the Photo Engraving process and is divided into two classes or en- tirely dissimilar work-half-tone en- graving and line work engraving
 By line work is meant the photo- graphic reproduction of pen-and-lnk drawings, such as the cartoons that daily appear in The Advertiser.
 Take the making of a cartoon. The artist after making his drawing tor- wards 1t to the engraver. The en- graver takes the drawing and places It in front of very fine camera. This camera can either enlarge or reduce the drawing to the size of the Mana ging Editor desires 1t to appear in the paper.
 The drawing is photographed in this way onto a thin piece of wet coated glass, from which a negative of the drawing is secured. The glass Is then dried and coated with a solution or ruo- Der. which is made thoroughly dry A solution of colodium is then put on the negative and again 1t is dried. The negative now appears as film. The negative is cut and transferred to an- other piece of glass. A piece of zinc is cut a little larger than the size of the negative. The zinc is highly poll lished with a piece of very fine char coal in order that all roughness, greases etc, may be removed, leaving the zinc perfectly smooth and free from all tf1- purities.
 The zinc is coated with a solution of bichromate of ammonia and water and egg, which leaves the plate highly sem sitive to the light.
 The plate is then placed in large printing frame, where the sensitive zinc Is put in contact with the negative. Both are then exposed to the bright rays of a strong arc-lamp or the sun for three or four minutes, varying &C., eording to the strength of the light. The light penetrates through the trans parent part of the negative, which pro- duces the picture from the negative to the zinc plate.
 The plate Is taken out of the printing frame and rolled up with a coating of Ink. It is placed under tap of run ming water. All parts that had been exposed to the light through the nega- tive will remain on the zinc. The parts not having been exposed, will wash away, leaving the picture clean and distinct on the zinc.
 A zinc print is produced, which is dried and placed In a box. containing dragons blood" red powder. This powder Is brushed over the print with a fine camel-hair brush.
 The zinc print Is placed over a gas burner to harden the powder, which re- mains on the surface of the print. The print Is placed in a tub containing ni- print that have no powder clinging to them, will be etched away by the acid, making a relief outline of the pie ture.
 The plate is then powdered and etched three or four times until the relief line becomes strong and deep enough to print a plate. +.-.........
 The powder is washed off with a strong solution of I've. The metal plate is then put on & routing machine where the finishing touches are put on.
 The half-tone process varies consider ably with the line work. Previous to the time when the half-tone process came in use, all newspaper cuts were made from drawings. The half-tone Is photograph of a photograph.
 The photograph Is placed in front of a camera and photographed on wet coated plate through a screen. The screen is formed of two pieces of glass, ruled obliquely with from sixty to elgh- ty lines to the square inch. The pieces are placed together with the lines crossing each other.
 The pieces of glass form a trans parent screen. which breaks the image Into mass of fine dots, varying in size according to the amount of light and shadow on the various parts of the Image, passing through the net work made by the screen.
 After the image Is made 1t is trans formed into a newspaper cut by about the same method as is used in a line cut.