1839.] On the Egyptian system of Artificial Hatching. 41 



roof, in the centre of which there are three apertures (J K L, fig. 2nd) 

 of nine inches in diameter, to give light from above ; to the right and 

 left hand of the corridor there are five divisions or cells of two stoves. 

 Each inferior room or stove has an aperture of 1 J feet square (M, fig. 

 2nd). The superior room has another aperture above of two feet five 

 inches in height, and one foot nine inches broad (N, fig. 3rd) ; it has 

 also an aperture of one foot square in the wall of the right hand, and 

 another of equal size in the left, which I have seen constantly 

 stopped up with tow (d, fig. 4th). The walls of the said upper stove 

 begin rectangular from the ground, finish in a vault of 6J feet 

 high (O, figs. 3rd and 4th), with a hole in the top of nine inches 

 diameter (P, figs. 3rd and 4th). The ground of this room is nine 

 feet long and eight broad (X Z V U, fig. 5th) and has in its breadth, 

 that is to say in the same direction with the corridor, two grooves 

 (Q Q, R R, fig. 5th.) of nine inches broad and two deep, and in the 

 centre an aperture almost round of two feet in diameter (S, fig. 5th). 

 The first room entering to the right hand is destined to keep a 

 fire always kindled ; it has only one stove, and its door is larger 

 than the others (T, fig. 2nd). The first room to the left hand 

 has no hole in the ground of the upper stove, but only a fissure 

 of two feet, which separates the ground from the interior of the wall, 

 to which it is notwithstanding united by several iron bars in the 

 form of an oblique grate, (b, fig. 6th.) In this cell the materials 

 destined for combustion are thrown through the hole in the top. 

 They pass through the grate as through a sieve, and are taken away 

 by the inferior aperture to be transported to the opposite cell which 

 contains the magazine of fire. 



There are, lastly, to the left hand of the exterior corridor two rooms 

 15 feet square, with vaulted roofs of 12 feet high, with an aperture 

 in the top ; they are intended for the preparation of eggs, as well as a 

 place for chickens recently born, &c. (f and g, fig. 1st). 



The material for constructing the oven, is the same employed 

 generally in Egypt for the houses of the peasants ; that is to say, 

 mud mixed with straw. The vaults are constructed with burnt 

 bricks. The ground which divides the cell in two stoves is sustained 

 upon two trunks of palm trees parallel to the corridor, and a bed 

 of branches of the same tree supported by the said trunks. Upon 

 this entablature is spread the mud which forms the ground whereon 

 the fire is placed. 



A little straw or tow is prepared on the ground of the inferior 

 room ; upon it a mat is placed, and upon the mat 6000 



G 



