VOL. XLViri.J PHILOSOPHICAL TRANSACTIONS. 529 



Richinan, at the time of his death, had 70 rubles (a silver coin) in his left coat- 

 pocket, which by this accident were not in the least altered. 2dly. That his 

 clock, which stood at (f), in the corner of the next room, between the open 

 window and the door, was stopped ; and that the ashes from the hearth (g) were 

 thrown about the room. 3dly. That many persons without doors declared their 

 having actually seen the lightning shoot from the cloud to the Professor's appa- 

 ratus at the top of his house. A view is likewise added of the chamber, (fig. 7) 

 where the Professor was struck by the lightning: who stood at (h), with his 

 head projecting towards (g) his electrometer; at (m) stood Mr. Sokolow the en- 

 graver; from the door (c) a piece was torn off, and carried to (d); (ab) part of 

 the door-case rent. 



In this treatise Mr. Lomonosow, among other phenomena of electricity, takes 

 notice, that he once saw, in a storm of thunder and lightning, brushes of elec- 

 trical fire with a hissing noise, communicate between the iron rod of his appa- 

 ratus and the side of his window; and that these were 3 feet in length, and a 

 foot in breadth. Effects like these no one but himself has had the opportunity 

 of observing. 



XC. Extract of a Letter from John Henry fVinhler, Professor of Natural Phi- 

 losophy at Leipsic, and F. R. S. relating to two Electrical Experiments. Dated 

 Leipsic, May 22, 1754. p. 772. 



On January 8, he sprinkled a plate of metal with the seeds of club-moss.* 

 To this plate he connected a chain, which communicated with the coating of the 

 Leyden bottle of water. He afterwards sufficiently electrized this water, to make 

 the artificial thunder, of which he gave an account in his treatise De Avertendi 

 Fulminis Artificio, p. 10 and 1 1. Having drawn these seeds together on a heap 

 on the plate, he brought over them the sphere of metal, the size of which is" 

 arbitrary, impregnated with this electricity. On bringing this sphere near the 

 plate, the electricity exploded, by which the seeds were set all on fire. These 

 seeds were dry, and had no inflammable spirit mixed with them. The flame 

 which arose from these seeds was true fire, as it lighted some flax, which lay on. 

 the seeds, and extended itself beyond the metal. 



Jan. 13 he put some aurum fulminans on a circular piece of parchment: this 

 parchment he cemented to a plate of metal, and caused the bottle replete with 

 electricity to be discharged on it. Immediately the aurum fulminans exploded 

 with a very loud report, and the circle of parchment was torn all to pieces. 



• Lycopodium, club-moss, wolf's-claw. — Orig. 

 VOL. Xw S Y 



