.( ) 
they have in common with the Ignes Fatui, differing 
very much in other Refped?, particularly in not ap- 
pearing at all Seafons of the Year, and molt frequently 
in the Winter, as the others do. Thus far, what I 
could learn concerning the Will ‘with a Wifp^ as it 
hath been obferved in the Plains. As to the Ap- 
pearance of this Phcenomenon in' mountainous’ Parte, 
by what I have hitherto been able to learn, they dif- 
fer in nothing elfe but in Largenefs ^ and all thofe 1 
convcrfed with, that faw them in the Mountains, agree 
in that they never obferved any larger than the Flame 
of .an ordinary Candle. Nor do thofe that live in the 
Mountains call them Cularp\ which Name is perhaps 
ufed only by the Country People in the Plains for 
thofe large ones above defcribed. I will make it 
my’ Bulinefs to enquire a little farther ..into this 
Matter, if perhaps nhe large ones are feen in the 
Plains only, and thofe in the Mountains are always 
fmalj. The Difference of the Air, and that of the 
Soil may, for ought I know, contribute a great deal 
towards the different Size of thefe Appearances ; at 
leaff all that I can offer material at prcfent towards 
folving this particular ^Circumftance, with Regard to 
their Largenefs, is, that thofe Grounds, where we ob- 
ferve the largeft Fires, as at Bagnara^ are what they 
here call Jlrong Ground (terreni forti) being a hard 
chalky and clayey Soil, which will harbour the Wa- 
ter a long while, and is afterwards, in hot 'Weather, 
very apt to breakinto large Cracks and Fiffures^ where- 
as on the contrary, thofe Soils in the Mountains, where 
they obferve the fmall Fires, are what they call fofr, 
, or /‘weet Ground {terreni doJci) being generally 
fandy, and of a more loofe Contexture, which do not 
F f X ‘ keep 
