«An Idea of a 
Mellow Earth, with Sand, or with Clay 5 or Sand with Clay; or alto- 
gether; and in what Proportions, The Principles whereinto any one 
Of thefe Ingredients, feparated from the reft, and put to the Teft of 
Diftillation, Uftion, Calcination, or other, either alone, or by mix- 
ture with other Bodies, may be Refolved. And bytheir Qualities, as 
Colour, Smell, Tafte, exc. both Ingredients and Principles to be exami- 
ned. To make tryal of the growth of Plants, in all kinds of fimple 
Soils; either Earthy or Mineral, as Clay, Marl, Oker, Fullers Earth, 
Bole Armeniac, Vitriol, Allum, &e. or Vegetable, as Rotten Wood, 
Brans, Starch, or Flower, &c. or Animal, as Dungs, pounded Fleth, 
dried and powdered Blood, and the like ; that it may appear, how far 
any of thefe may contribute to the growth of a Plant 5 or to one,above 
another. 
59. §. Next of the water, and ofall Liquid Receptacles. Where 
the feveral kinds of Water, from Wells, Springs, Rain, and Rivers are, 
by their Qualities and Faculties, to be examined; as thefe, and by 
thefe, their Principles, either in their Natural State, or upon Digefti- 
on, or otherwife, may be obfervable : fince Common Water it felf is 
undoubtedly compounded of feveral Principles 5 the fimplicity there- 
of, not being argued, fiom its Clearneßand Tranfparency3 for a Solu- 
tion of Alum, though it containeth a confiderable quantity of Earth, 
is yet very Clear: nor from its feeming to have neither Sel nor Tafte 5 
for Water-driwkers will tell you of the varieties of both in different 
Waters. Befides, if thefe Qualities fhould be accounted rather Phan- 
fie, than Senfe ; the difference of Waters is yet more manifeft, from 
their different Effedts, obferved by Cooks, Laundreffes, Brewers, and 
others, that have occafion to ufe them: fornot to mix with Sope,with- 
out curdling ; not to boil Meat tender, or without colouring it red; 
and the like, are the vices of fome Waters, not of others, which yet 
would feem, in Colour, Tafte,and Smell, to be the fame. Tryal fhould 
alfo be made En of Plants in all kinds of Liquid Recepta- 
cles, as Common Water, snow Water, Sea Water, Urine, Milk, Whey, 
Wine, Oyl, Ink, &c. Or any of thefe, with a folution of Salt, Nitre, 
Sal prunelle, Sope, or other body. And hereby to obferve what fol- 
lows, either in the Liquor, or in the Plant it felf: as if any fixed Body, 
being weighed before its diffolution in Water and ifthe Plant, fet herein, 
groweth 5 the Water, being then evaporated; whether the quantity ofthat 
diffolved body,continue the fame,or is leffened.So,whether any Vegetable 
will become Opiate,by growing aconfiderable time ina plain Solution or 
Water-tinéture of Opium 3 and the like. Which Experiments,what event 
foever they have, yet at leaft, for our further inftruction in the Nature 
of Vegetation, may be of ule. 
60. $. Next of Aer, where it will be requifite to inquire,what fort 
of Bodies may be herein contained : Itbeing probable, from the variety 
of Meteors formed herein; and of Vapours and Exhalations continually 
advanced hereinto; that fome or other ofthem, may bear an Analogy, 
to all Volatile Bodys, whether Animal,Vegerable, or Mineral. The flou- 
rifhings alfo of Frozen Dew 3 and the Green Colour, which the 4er 
gives the Ground or Water, when, for fome time expofed toit; and 
other effects 5 feem to argue, thatit is Impregnated with} 
ciples. To confider alfo the peculiar Nature of that Body, whic! 
ly called, 4er, And of that true Aerial Salt,which to me, feemeth pro- 
bable, 
