[ 583 ] 
in cryftalllzations not unlike thofe of watery con- 
gelations. 
1 muft not however omit that the other bafalt- 
mountains, which J have feen in Haffia, about Felf- 
berg, Aldenberg, and Gudenfberg, have (hewn me 
bafaltes without any addition ; thelb mountains ftand- 
ing by themfelves, and fliewing no traces of either 
lavas or fcoriae. 
For the illuftration of this paper, I have caufed . 
two engravings to be made j viz. Tab. XVIII. of the 
bafalt-rock near Gudenfberg j and Tab. XIX. of the 
bafaltes of Felfberg. 
/ 
I am, with particular regard. 
Dear Sir, 
Your very obedient fervant, 
E. Rafpe. 
LV. An 
