6 PHOSPHORESCENCE. 
ning body had passed over into the recipient. He 
repeated the experiment with the black extract, 
and, after applying as great a heat as he could 
muster, he obtaimed a notable quantity of this 
trange shining substance, collected it im silent 
astonishment, studied its properties, found that it 
was extremely inflammable, and that it possessed 
the curious property of shinimg intensely in the 
dark. 
These experiments were made in the year 1669, 
and the luminous substance was called Phosphorus. 
Brandt immediately sent a specimen of this 
wonderful body to Kunkel, chemist to John 
George II., Elector of Saxony, and one of the 
most distinguished savants of the day, but did 
not disclose to him the secret of its preparation. 
Kunkel, in his turn, showed it to his friend Kraft, 
of Dresden, who found it so marvellous that he. 
proposed to set out immediately for Hamburg, and 
endeavour to discover how this luminous substance 
was prepared. He took two hundred dollars with 
him, and succeeded in buying for that sum the 
whole detail of the preparation. But Brandt only 
delivered it on the condition that Kraft should 
disclose it to no one. 
Kunkel, whose passion for chemistry was in- 
tense, felt such disappomtment when he learnt 
that Kraft possessed the secret, and yet could not 
make it known to him, that he determined to set 
