3. Our famous Lake never freezes ; but on the contrary 
in the violentcfi frofts the greater clouds of fteams do arifc frora it. 
And I renveniber, that at two fevera! times, I being at Invernefs^ 
walking in the evenings along the bridge over the River iV>/},a mift 
of thofe fteams coming from the Lake and falling down to us over 
the River (for there was no mift in any p'ace thereabout but on this 
Lake and River only,)oiJ^ hair became all white^like the whitenefs 
of a hoare-froft, but ic was foft and warm *, and this was in the 
midft of Summer and in warm evenuigs. La ft week I was fpeak- 
ing with Dr. George Makenzy ("who 1 ivesat Inverse fs^ of this mat- 
ter : He told me, that he obferves Rofemary to continue in the gar- 
dens about that Lakes (ide , notwithftanding the laft Winters 
long and violent frofts ; whereas a farlefs violent Winter ordinari- 
ly kills all the Rofemary which is in gardens that lye in warme» 
places and at the Sea-fide : And, which is more, though I live near 
it, and in a better fojle and warmer fcituation yet any Winter, 
more than ordinary cold, kills my Rofemary, though cover d over 
with draw and litter : Whereas near Logh JSfefit remained good, 
though uncover'd, in the laft fharp Winter ; which he attributes 
(and, J think, on good ground) to the warmth occafioned by thofe 
fteams that frequently arife from that Lake. Febr, 2$. 167^-. 
4. Having in n)y former Letters written of water,! (hall yet add 
this of that fubjefl ; That in G/evelgzt a place called Achigmgliun 
thereisa litle Rivolet, which fo turns Halfy imo a greenifli ftone, 
that they ordinarily make moulds of it for caftingof balls for fu- 
ftes ; and Tinkers that work in brafs make borh their moulds and 
melting pots of it ^ and wouien their round wharls for fpinning. 
May it not be, that by the long infufion in water, defcending from 
hills, which perhaps abound in marie capable to be refolved into 
fmall particles by the conftant w^aflaing of the water,may it not be, 
I fay, that thefe litle particles do intrude into thecleanfed poresof 
the and fo make up that foft ftone? And any thing ligneous 
remainingofthe very hard timber, being all incruftated with this 
marble, may it not thereby be guarded from the aaionof the fire!? 
Jpri/ 16. 167 
Some 
