EGGS. 153 



ton, with an aluminous basis, a permanent brown, and com- 

 municates the same to wool, without any mordant. 



" By the dexterous combination of the four leading colors," 

 says Dr. Bigelow in his Useful Arts, " blue, red, yellow, and 

 black, all other shades of color may be produced. Thus green 

 is communicated by forming a' blue ground with indigo, and 

 then adding a yellow by means of quercitron-bark. One of 

 the latest improvements in the art of dyeing consists in the 

 employment of colors derived from the mineral kingdom. 

 Prussian blue, orpiment, chromate of lead, and other min- 

 eral compounds, have, by appropriate processes, been made 

 to communicate their colors to different stuffs. An abstract 

 of the processes is given in Ure's Notes to Berthollet on 

 Dyeing." 



See Bancroft on Permanent Color ; Professor Low's Ele- 

 ments of Agriculture, Art. Plants cultivated for Dyes ; 

 Bigelow's Useful Arts ; and an interesting article in Quar- 

 terly Review (English), entitled Dr. Bancroft on Permanent 

 Colors, Art. XIV., 1814. 



EGGS. Various ways are recommended for preserving 

 eggs. One way is to pack them in a keg, and then pour 

 over them lime-water, which should be prepared thus : 

 Take a gallon of soft water, throw in a handful of clean salt, 

 and a quart-bowlful of unslacked lime ; when it is cold, pour 

 it carefully over the packed eggs. 



Eggs may also be rubbed with fresh butter, or dipped in 

 liquid mutton-suet or beef-suet. In eithef case they are no 

 longer capable of being hatched. Where a few only are to 

 be preserved, they may be smeared with some sweet butter 

 or fat, hung in a net, and daily turned upside down. 



Three minutes is the usual rule for boiling eggs of the 

 average size. Eggs should not be cooked till eight or ten 



