112 



FRICTION. 



titles, that it is employed in Dominica as 

 a substitute for the white of eggs in clari- 

 fying the juice of sugar-cane. 



Albumen may be distinguished from 

 other substances by its property of co- 

 agulating by the action of heat or acids, 

 when dissolved in water. According to 

 Dr. Bostock when the solution contains 

 only one grain of albumen to 1000 grains 

 of water, it becomes cloudy by being 

 heated. Albumen is a substance common 

 to the animal as well as to the vegetable 

 kingdom, and much more abundant in the 

 former. 



Fire Extinguisher — These are either 

 simple or compound solutions. One of 

 the former consists of 75 gallons of water 

 and 9 gallons of the strongest solution of 

 wood ashes. Among the latter, — To 75 

 gallons of water, with 18 quarts of the 

 strongest solution of wood ashes, add IS 

 quarts of fine clay, reduced to powder, — 

 or 15 quarts of the strongest herring- 

 pickle, and 15 quarts of red ochre, with 

 75 gallons of water, — or burnt alum 30 

 lbs., green vitriol in powder 40 lbs., cina- 

 brese, or red ochre pulverized, 20 lbs.. 

 Potters' or other clay finely ppwdered 

 and sifted 200 lbs., water 620 lbs. — An- 

 other, — Dissolve such a quantity of pot- 

 ash in cold water as that fluid is capable 

 of holding in solution, wash or daub with 

 it all the boards, wainscotting, shingles, 

 &c., which are intended to be prepared. 

 Then dilute the same liquor with a little 

 water, add to it such a portion of fine yel- 

 low clay as will make the mixture of the 

 consistence of the common paint employ- 

 ed on wood ; and lastly, stir into it a 

 small quantity of flour paste, in order 

 to combine both substances intimately. 

 With this mixture all wooden materials 

 ought to be coated three or four times 

 similar to painted work. The propor- 



Frost counteracted. — As the blossoms 

 of fruit trees are more particularly affected 

 by early frosts, the following plan has 

 been recommended to counteract the in- 

 jurious effects of the same. — A rope is to 

 be interwoven among the branches of the 

 tree, and one end of it immersed in a 

 pail of water. This rope it is said will 

 act as a conductor and convey the effects 

 of the frost from the tree to the water. — 

 Both hemp and straw have been recom- 

 mended for this purpose. 



Friction, in medicine, is the act of rub- 

 bing a diseased part with oils, unguents, 

 and other matters, in order to ease, relieve 

 and cure it. Friction is also performed 

 with flannel, which is highly recommend- 

 ed particularly to sedentary persons, who 

 will find much benefit, particular!}' in the 

 morning before eating. Medicated fric- 

 tions, or the introduction of the most ac- 

 tive medicines into the human system, 

 might be attended with the most benefi- 

 cial effects, especially in all chronical 

 diseases, instead of the stomach being se- 

 lected for the application of all reme- 

 dies. 



tions and quantity recommended to cover 

 a square rood (French measure and 

 weight) of deal boards is 20 lbs. of sifted 

 yellow clay, 1^ lbs. of flour for making 

 the paste, and 1 lb. of pot-ash. It is said 

 that wood covered with this substance \ 

 never bursts into flame; and that most of 

 the moveable wooden furniture of a house 

 may be covered with it so that it may be 

 reduced to coals without communicating 

 fire to the house and spreading the con- 

 flagration (as is frequently done where this 

 process is not adopted,) thereby giving 

 time for the inmates to escape and remove 

 their valuable articles of furniture. 



CONTENTS OF. NO. 7. VOL. X. OF OBSERVER AND RECORD. 



New invended Steam Engine, 97 



Iriiproveinents in Steam Boilers, and Saving of Fuel, 97 



Improvement of a Common Fire- Place, . . . . '.)8 



Important to Farmers, . 98 



The Cranberry, . . . , 99 



Dr. Graves on the Treatment of Epista.xis,. . . 99 



Adulteration of Quinine, lOO 



Hunter on Tetanus, 100 



Sub-carbonate of Iron in Whooping Cough, . . 101 



Hunter on Corns., 101 



Chilblains cured by Balsam Coi)aiba, 102 



Method of Cleaning Glass, 102 



To prevent Iron from rusting, 102 



"Valuable Information tor Watchmaker, .... 102 



Kohan Potato, 102 



Definition of Terms. Letter E., l£fi 



Sir H. Davys' Agricultural Chemistry, .... 104 



Fire Extinguisher, 112 



Frost coimteracted, 112 



Friction, 112 



. 



