32 



Plate containing crystals of nitre produced by the slow 

 evaporation of an aqueous solution intermediate in strength, 

 between a hot and a cold saturated solution. 



Apparatus to show the removal by nitration of substances in 

 suspension. 



Apparatus to show that ordinary water contains solid matter 

 in solution. 



Apparatus to show that water expands on heating. 



Apparatus to determine the boiling point of a liquid, and to 

 show that when substances are dissolved in water the boiling 

 point is raised. 



Apparatus to show the solution of camphor in alcohol. 



Method of showing the different effects produced by the 

 admixture of oil of vitriol with water, and of olive oil or 

 mercury with water. 



Apparatus by which to show that ordinary water contains air 

 in solution. 



Apparatus to show that air occupies space. 



Apparatus to show that a given amount of air is reduced in 

 volume when the pressure is increased. 



Apparatus to show that air has weight. 



Apparatus to show that a continued supply of fresh air is 

 necessary in order that combustion may continue. 



Apparatus for removing the oxygen from the air, and showing 

 the resulting diminution in bulk. 



Deflagrating spoon for showing that phosphorus will not burn 

 in the gas produced in the last experiment. 



Apparatus for showing the formation of a compound of 

 phosphorus and oxygen. 



Apparatus for making an approximate estimation of the 

 oxygen in the air. 



Apparatus for preparing oxygen, and showing that a piece of 

 charcoal or sulphur burnt in it forms a new body in each case. 



Apparatus to show that equal volumes of hot and cold water 

 do not weigh the same. 



Apparatus to show that hydrogen is combustible, but does not 

 support combustion. 



Apparatus to decompose steam by red-hot iron turnings. 



Apparatus to show the condensation of the water formed by 

 burning hydrogen. 



Apparatus for showing that hydrogen is lighter than air. 



Apparatus for exploding a mixture of oxygen and hydrogen. 



Apparatus for showing convection currents by heating water. 



Apparatus for showing that water is capable of existing as a 

 solid, a liquid, and a gas. 



