286 Researches upon Ihe Ileal developed 



fomi. This receiver has also another gullet of an inch in 

 diameter, and an inch in height, situated ai the centre of 

 its upper part, which is closed bv a cork stopper. 



In the interior ot this receiver, two lines l-'roiTi the bottom, 

 is a peculiar kuid of worm, which receives ail the products 

 from the com!)UJtK))i oHhc infiaiiimable bodies which are 

 burnt in the experiments, and which transmits the heat 

 evolved in this combustion to a considerable mass of water 

 which IS contained in the receiver. 



This v.oru), which is constructed of thin plates of copper, 

 occupies and covers the whole boiiom of the receiver, 

 without touching, however, either the sides or bottom. It 

 is a flat tube, an inch and a hall broad at one of its extre- 

 mities, an inch broad at the other, and halt an inch in 

 height or thickness throughout. It is folded horizontally, 

 so as to pass thrice from one extremity of the receiver to 

 the other ; and it is kept in its place by several small feet, 

 at the height of two lines above the bottom of the receiver. 

 The aperture which forms the mouth of the worm, is a 

 circular hole in its bottom near its extremity, where it is 

 broadest ; and at this hole a vertical tube is soldered, an 

 inch in diameter and an inch in height, which enters a 

 quarter of an inch into the interior of the worm above the 

 level of the bottom. 



This tube passes through the bottom of the receiver by a 

 circular hole made for the receiver, and where it is soldt red: 

 its lower aperture, which is open, is seven lines below the 

 level of the bottom of the receiver, and it is by this pas.-)age 

 that the products of the combustion are made to pass into 

 the worm. 



The other extremity of the worm traverses horizontally 

 the vertical side of the extremity of ihe recipient opposed 

 to that near which the products of the combustion enter 

 the worm. 



The worm, before passing through the vertical side of the 

 extremity of the recipient, takes the form of a round tube 

 six lines in diameter, and a piece ot this tube, an in^^h in 

 length, is seen oul;-ide of the receiver, lliis piece is in- 

 leiided to enter another similar tube belonging to the worm 

 of a second receiver, which I call the secondary receiver, 

 and which is intended to receive the heat which nngiit still 

 exist in the jvroducis of the tomin.stion after they have 

 passed through the worm from the principal receiver. 



In order to support these two receivers in the air, so as 

 not to touch the table on which they are placed, they are 

 both fixed into squas^s of dry linden wood, made of 



sticks 



