Fire-places and Kitchen Utensils. 477 



rammed quite full of small coals ; or, what would be 

 still better, of coal-dust mixed up with a certain pro- 

 portion of moist clay. 



I have already, in a former part of this Essay, men- 

 tioned how necessary it is, in setting double doors in 

 brick-work, to take care to mask the farther end of 

 the door-way in such a manner (by means of bricks 

 interposed before it, or between it and the fire) that 

 the rays from the burning fuel may never fall on it. 

 The manner in which this is to be done is clearly 

 represented in the Fig. 92. 



All these precautions for preventing these double 

 doors from being injured by excessive heat will be the 

 more necessary in proportion as the fire-places are 

 larger to which they belong. 



There is one essential part of this apparatus which, 

 for want of room, was omitted in the two last figures, 

 that is, the straps of wrought iron, by means of which 

 the door-way is firmly fixed in the brick-work ; but this 

 omission can be of no consequence, as every common 

 artificer will know, without any particular directions, 

 how that part of the work should be executed. These 

 straps must of "course be fastened to the cast-iron door- 

 way by means of rivets. 



CHAPTER XV. 



Apology for the great Length of this Essay. Regret 

 of the Author that he has not been able to publish 

 Plans and Descriptions of the various culinary In- 

 ventions that have lately been put up in the Kitchen 

 belonging to the House of the Royal Institution and 



