426 TRANSACTIONS OF THE 



of the strength of wine vinegar. This ink does not suit linen, as the wash- 

 ing and rubbing will remove it. 



INDIAN INK. 



This is made of purified lampblack of the finest quality, formed into a 

 paste with glue size, which is moulded into cakes of suitable size and 

 shape.* 



JAPAN INK. 



For large quantities this is made of Aleppo galls, 12 lbs.; "copperas, well 

 roasted, 4 lbs.; gum, 3^- lbs.; water, 18 gallons. This ink is intensely 

 black, and with some sugar added, it makes copying ink. It, however, is 

 not durable. 



PRINTING INK. 



This ink is made of best clear linseed oil, 1^ gallons ; resin pulverized, 

 6 lbs.; dry brown soap, in shavings, 1^- lbs.; indigo and Paris blue, of 

 each, 2| ounces; purest lampblack, 5 lbs. Boil the oil first, and burn it 

 to the consistence of thick varnish. While constantly stirring add in the 

 resin and then the soap ; then, with a crutch, mix in the lampblack, indigo, 

 and Paris blue thoroughly. Let it rest for a week, after which grind it in 

 one of Bogardus' eccentric mills. 



" Savage proposes as a superior black printing ink : Balsam Capaiva, 

 9 ounces ; best lamp black, 3 ounces ; Paris blue, 1^ ounces; Indian red, 

 I ounce; dry resin soap, 3 ounces." • 



LITHOGRAPHIC INK. 



" Lasterie's, which is the best, is made as follows : Dry tallow soap, 

 80 parts; mastic, in tears, 15 parts; soda, 15 parts ; shellac, 150 

 parts ; lampblack, 12 parts. When it is to be used, it is to be rubbed 

 down with water to the required consistency, and depth of shade." 



INK FOR ENGRAVINGS. 



" This is made of nut, or linseed oil, with finely pulverized Frankfort 

 black." 



Mr. Meigs, having finished his paper, next read the circular of the 

 "London Society of Arts, relating to Decennial Fairs to begin m 1861. 



Dr. Vanderweyde, spoke of sepia, which is extensively used in litho- 

 graphic inks, and is also much employed in coloring drawings. 



Mr. Stetson, stated that in printing large letters on show bills, caraphene 

 is added to the ink to prevent its too great adhesion to the type. The 

 brilliant reds too, which are used, are very costly. Mr. Bogardus the in- 

 ventor of the mill by which all printers' inks are now ground, is a member 

 of our Institute. 



Mr. Seeley mentioned a Continental bill which he possesses, and which 

 was written on in the last century. The writing is now in a good state of 

 preservation. Nutgalls are used in making the best writing inks. Sym- 



• This process, when repeated in Europe, does not succeed, and, therefore, cannot bo the 

 true one. — J. R. 



