[ 236 ] 
nal flate of thofe mountains, which are now covered 
with verdure. 
Communicated by 
Madrid, 
Jan. 1765. 
P. Collinfon* 
XXVIII. Comment arms cle indole EleSlrica 
t 
Turmalini , auSlore Torberno Bergman, 
Mathematum & Philofoph'nz Naturalis ad 
Reg . Academia m Upf. adjunct 0, Academice 
Imper . N. C. Acade?nice Reg. Scientiarum 
Stock hoi men fis & Societatis Regime Lon- 
dinenlis membro 
Read Nov. 20, 1 . U M. circa finem annipraeteriti quin- 
766 que fele&i turmalini, ab Academia 
Regia Scientiarum Stockhohnenii nuper adquifiti,. in 
meas inciderent manus, venia illuftris hujus Societatis 
varia hifee inflitui tentamina, ut fingularium horum 
lapillorum naturam, fi fieri poffet, penitius expifearer. 
Fateri vero convenit, me parum fuccefius fperafie, 
poftquam celeberrimi noftri asvi phyfici, iEpinum 
loquor Sc Wilfonum, turmalinum adtentione, viris 
hujus ordinis propria, ferutati fuerant. Et fane, fi res 
effet di’iudicanda ex numero feriptorum admodum 
parvo, 
1 
