INGENTO/ BLUE PRINT/ POWDER/ TUBE// There are no more/ attractive or artistic prints than Blue Prints/ when the blues are bright/ and the whites are clear, nor/ is there any printing process/ so simple to manipulate or so/ inexpensive. Blue Prints can/ be made on almost any ma-/ terial, such as note paper, en-/ velopes, cards, silk, linen, can- /vas, etc., with little time and / ordinary care.// The best results are obtain-/ed when the material is used/ freshly coated, and the chemicals are pure.//[bolded] The Directions [bolded] for preparing the material are very simple, and may be given/ briefly as follows:--Dissolve the contents of one tube in 1 oz of water, coat, dry, / and print in the ordinary way; but to prevent failure we give all of the necessary/ precautions as follows:// Use pure water if possible; distilled, rain, or well boiled water. Filter the/ Solution through a linen cloth and coat the paper or cloth in a dim light with a / clean sponge, tuft of cotton or brush, and then hang up to dry in a dark place./ Make the prints while the material is freshly coated. Print in ordinary print-/ ing frames. Prints should be made rather deep so as to allow of ample washing/ afterwards. When the printing is done all that is necessary is to give them a/ thorough washing in running water. They may be dried between blotters, or/ mounted wet. When a small portion of cloth is to be sensitized it is better to use/ embroidery hoops. The Solution should be kept in a small bottle inside of a small/ dark box, as it will deteriorate if exposed to a strong light. // TONING BLUE PRINTS// Blue Prints may be toned to sepia, chocolate, or even black, at any time, by/ the following method:--Immerse the print in a saturated solution of Sodium Car-/bonate until the image has disappeared; wash in several changes of water, and/ then transfer to a saturated solution of Tannic Acid. The longer it is left in this / solution the deeper the tone will be. After toning, they are washed in the usual/ manner; dried and mounted--no fixing required.//Price, Per Tube---10 cents// BURKE & JAMES//CHICAGO//