388 INKS. 



& nemine promulgatum." This \vork is divided into six parf*. 

 The first of which treats generally of inks made from pyrites, stones, 

 and metals. 



Tin- second treats more particularly of inks made from metals 

 and calx< s. 



The third of ink made from soots and vitriols. 



The fourth of the different kinds of inks used by the librarii or 

 book-writers, as well as by printers and engravers, and of staining 

 or wri ing upon marble, stucco or scaliolia, and of encaustic model 

 of writing ; as also of liquids for painting or colouring of leather, 

 cloths, linen, and woollen, and for restoring inks that have been de. 

 faced by time ; as likewise many methods of effacing writing, re. 

 atoring decayed paper, and of various modes of secret writing. 



The fifth part treats of inks for writing, made in different coun. 

 tries, of various materials and colours ; as from gums, woods, the 

 juice of plants, &c. and also of different kinds of varnishes. 



The sixth part treats of the various operations of extracting vi- 

 triol, and of its chemical uses. 



This work abounds with a great variety of philosophical, chemi- 

 cal, and historical knowledge, and we conceive will give great enter- 

 tainment to those who wish for information on this subject. Many 

 curious particulars concerning ink will be found in Weckerus de 

 Secretis*. This gentleman also gives recipes for making inks of 

 the colour of gold and silver, composed as well with those metals as 

 without them ; also directions for making variety of inks for secret 

 writing, and for defacing of inks. There are many marvellous 

 particulars in this last.mentioned work, which will not easily gain 

 credit with the judicious part of mankind. 



[Astlc. 



The chief requisites for the making of good writing ink, are, I. 

 Limpidity, so that it may flow freely from the pen. 2. A deep 

 uniform and black colour. 3. Durability, so that the letters be not 

 liable to be effaced by age; aid 4. It should be divested of any 

 corrosive quality, by which the substance cf the paper may be de- 

 stroyed, or the writing rendered in any degree illegible. No ink 

 however, hitherto used, possesses all these properties ; hence several 



Printed at Basil in 1G1S, 8vo. 



