SUNS. 215 



from which it will proceed to the second, the seventh, the twelfth, 

 the seventeenth, and so on. These four rockets will make the 

 wheel turn round with rapidity. 



If two similar suns be placed one behind the other, and made to 

 turn in a contrary direction, they will produce a very pretty effect 

 of cross.tire. 



Three or four suns, with horizontal axes passed through them, 

 might be implanted in a vertical axis, moveable in the middle of a 

 table. These suns, revolving around the table, will seem to pur. 

 cue each other. It may be easily perceived that, to make them turn 

 around the table they must be fixed on their axes, and these axes, 

 at the place where they rest on the table, ought to be furnished 

 with a very moveable roller. 



[Montuela's Ozanan. Frezier Traite det Feux d'Arti- 

 fice. Perrinet d'Orone. Manuel de I'Arti/icier. 



The attention which has lately been paid to the amusing subject 

 of pyrotechny in this metropolis, in the course of the public fire, 

 works exhibited with so much spirit, and upon so extensive a scale, 

 in the royal parks, has made us fuller in this department than per. 

 haps we otherwise should have been. We believe there is scarcely 

 a device which Mr. Congreve has exhibited, that we have not ex- 

 plained. 



(Editor. 



