2^6 On the Preparation of Amhrr Varn'ijfj, 



of the iron has been dilTblved in this manner, thefolution will 

 be of a yellowifh brown colour. As foon as the mixture has. 

 cooled, pour it into a bottle placed in a pan, and let it ftand a 

 day or two, without being corked, over a warm ftove ; during 

 which time (liake the bottle frequently. The bottle being then 

 fuffered to cool, pour into it one pound three quarters of river 

 water, ftirring it well round, and leave it at reft for a few 

 minutes till the undilTolved part finks to the bottom : then 

 pour the folutioninto another bottle, and cork it up for ufe. 



Whenthi!> preparation has been carefully made according 

 to the above directions, you obt^iin a vellowifli brown folu- 

 tion, which may be employed for ftaining. In cafe too 

 much water, however, has been at firft employed, or too 

 weak aquafortis, the colour becomes dark brown; and there- 

 fore the addition of the aquafortis muft be increafed in that 

 proportion which the folution requires, obferving the above 

 rules. 



This (lain may be applied to all kinds of wood except oak, 

 which contains too much aflringcnt matter, and therefore on 

 the firft application becomes almoft black. It communicates 

 to the varioiw kinds of wood different colours, according as it 

 is applied in greater or lefs quantity ; fuch as yellow, yel- 

 lowilli brown, and dark brown, with reddifli brown ftripes 

 or fpots. 



As far as I have been able to afcertain by experience, 

 this ftain is one of the moft durable; it withftands the air 

 and rays of the fun without changing its colour. I have fpe- 

 cimens of it which have been expoled four years continually 

 to the fun and air, without their colour being altered. 



a. Brazil IVood Stain. 



Eioht ounce?; of real Brazil wood, four ounces of alum, 

 and four ounces of finely pounded reddle or red ochre. Pour 

 over this mixture a proper quantity of water; and, having fuf- 

 fered it to remain in that ftate twenty-four hours, boil it to 

 a fourth pait; then ftrain it through a piece of linen cloth, 

 and preferve it in a glafs bottle for ufe. 



If one pound of the ftain No. i. be diluted with three 

 pounds of wat^T, immerfe feme pieces of wood in it, and 



depofu 



