hot 
as the Pine-apple requires tc be conftantly kept very 
warm, in order to ripen the fruit well, fo it will be 
found upon trial, that the depth 1 have allowed will 
anfwer that purpofe better than a greater. 
But if the Bed be intended for taller plants, then the 
frame mu ft be made in depth proportionable thereto ; 
but if it be for fowing of feeds, the frame need net be 
above fourteen or fix teen inches high at the oack, and 
feven inches deep in the front, by which means the 
heat will be much greater ; and this is commonly the 
proportion allowed to the frames ufuaily made ufe of 
in the kitchen-gardens. As to their length, that is ge- 
nerally according to the fancy of the owner ; but they 
commonly contain three lights each, which is in the 
whole about eleven feet in length, though fometimes 
they are made to contain four lights •, but this is too 
great a length for die boxes, for the frames thus made 
are not fo handy to remove, as when they are fhorter, 
and are more fubjedt to decay at their corners. Some 
indeed have them to contain but two lights, which is 
very handy for raffing Cucumber and Melon plants 
while young •, but this is too fliort for a Bark-bed, as 
not allowing room for a proper quantity of bark to 
continue a warmth for any confiderable time, as was 
before-mentioned ; but for the other purpofes, one or 
two fuch frames are very convenient for common 
Dung-beds. 
As to thofe frames which are made very deep, it is 
much the better way to have them made to take afun- 
der at the four corners, fo that they may be removed 
with cafe ; otherwife it will be very difficult to take the 
frame off, when there is occafion to put in new bark, 
or take out the old. The manner of making thefe 
frames is generally known, or may be much better 
conceived by feeing them than can be expreffed in 
writing, therefore I ffiall forbear faying any thing 
more on this head. 
HOTTONIA. Boerh. Ind. alt. i. p. 207. Lin. 
Gen. Plant. 203. Stratoites. Vaill. Ad. Par. 1719. 
Water Violet. 
The Characters are. 
The flower is funnel-ftoaped -, it has one petal , with a tube 
the length of the one-leaved empalement , hut is cut above 
into five oblong oval fiegments , which fipread open , and are 
indented at their extremity. It hath five Jhort awl-Jhaped 
fiamina fianding on the tube of the petal , oppofite to the 
cuts , terminated by oblong fummits. In the center is fitu- 
ated a globular gsrmen ending in a point , fupporting a 
fioort fender ftyle crowned by a globular ftigma , which 
afterward becomes a capfiule of the fame form , with 
one cell , filed with globular feeds , fitting upon the em- 
palement: 
This genus of plants is ranged in the firft fection of 
Linnfeus’s fifth clafs, intitled Pentandria Monogy- 
nia, which includes the plants whofe flowers have five 
ftamina and one ftyle. 
We know but one Species of this genus, viz. 
Hottonia ( Paluftris .) Boerh. Ind. alt. 1. p.207. Wa- 
ter Violet. Millifolium aquaticum five viola aquatica 
caule nudo. C. B. P. 141. Water Milfoil , or Water 
Violet , with a naked folk. 
This plant grows naturally in ftanding waters in 
many parts of England ; the leaves which are for the 
moft part immerfed in the winter, are finely winged 
and fiat, like moft of the fea plants-, thele extend 
pretty wide, and at the bottom have long fibrous 
roots, which ftrike into the mud the flower- ftalks 
rife five or fix inches above the water they are naked, 
and toward the top have two or three whorls of 
purple flowers, terminated by a fmall duller of the 
fame. Thefe flowers have the appearance of thofe 
of the Stock-giilifiower, fo make a pretty appearance 
on the furface of the water. The flowers appear in 
June. 
It may be propagated in deep ftanding waters, by 
procuring its feeds, when they are ripe, from the places 
of their natural growth, which ffiould be immediately 
dropped into the water where they are defigned to 
grow, and the fpring following they will appear % and 
H U R 
if they are not difturbed, they will Icon propagate 
themfelves in great plenty. 
HUMIDITY is the quality commonly called moi- 
fture, or the power of wetting others* which quality 
fome liquors and fluids are endowed with , and it dif- 
fers very much from fluidity, in that it depends alto- 
gether on the congruity of the component particles 
of any liquor to the pores or furfaces of fuch particu- 
lar bodies, as it is capable of adhering to. 
Thus, quickfilver is not a moift liquor, in refpeft to 
our hands or clothes, and many other things it will 
not flick to 5 but it may be called a moift liquor, , in 
refpedl to gold, lead, or tin, to the furfaces of which 
it will prefently adhere. 
Nay, water itfelf, that wets almoft every thing, 
and is the great ftandaid of Humidity, or moifture, 
is not capable of wetting every thing for it Hands, 
and runs eafily off in globular drops, on the leaves 
of Cabbages, and many other plants and will not 
wet the feathers of ducks, fwans, and other water 
fowl. 
And it is very plain, that it is only the texture that 
may caufe the fluid to be humid -, becaufe neither 
quickfilver alone, nor bifmuth, will flick upon glafs; 
yet being mixed together, they will form a mafs that 
will flick on it ; as it is very well known in the fo- 
liating of looking-glades, in which fuch a eompo- 
fition is ufed. 
HUMULUS. See Lupulus; 
HURA. Lin. Gen. Plant. 965. Hura, or Sand-box- 
tree. 
The Characters are, 
It hath male and female flowers on the flame plant. The 
male flowers „ have no petal , or flcarce any empalement , 
but a column of fiamina, which are joined at bottom to the 
ftyle , forming a cylinder -, thefe fpread out at the top , and 
are terminated by Jingle fummits lying over each other . 
The female flowers have a fwelling empalement of one 
leaf with one tubulous petal ■, the roundijh germen is fit u- 
ated in the bottom of the empalement , fupporting a long 
cylindrical ftyle , crowned by a large funnel-Jhaped ftig- 
ma , which is a plain convex , divided into twelve equal 
obtufle parts. The germen afterward becomes an orbicular 
ligneous fruit , deprejfled at top and bottom , having twelve 
deep furrows , with fo many cells , which open at the top 
with an e 'lafticity , each containing one round flat feed. 
This genus of plants is ranged in the ninth fedtioii 
of Linnaeus’s twenty-firft clafs, intitled Moncecia Mo- 
nodelphia, which includes thofe plants which have 
male and female flowers at feparate di fiances in the 
fame plant, whofe fiamina are joined to the ftyle, 
forming one body. 
We know but one Species of this genus, viz. 
Hura { Crepitans .) Hort. Cliff. 486. Sand-box-tree. PI li- 
ra Americana, Abutili Indici folio. Hort. Amft. 2. 
13 1. tab. 66. American Hura with the leaf of the In- 
dian Abulilon , commonly called in the Weft-Indies Sand- 
box-tree. 
This grows naturally in the Spaniffi Weft-Indies, from 
whence it has been introduced into the Britifti colonies 
of America, where fome of the plants are preferved 
by way of curiofity. It rifes with a foft ligneous fie in- 
to the height of twenty-four feet, dividing into many 
branches, which abound with a milky juice, and have 
fears on their bark, where the leaves have fallen off 
The branches are garnifhed with heart-ihaped leaves 5 
thofe which are the biggeft are eleven inches long, and 
nine inches broad in the middle, indented on their 
edges, having a prominent midrib, with feveral tranf- 
verfe veins from that to the fides, which are alternate $ 
thefe Hand upon long {lender foot-ftalks. The male 
flowers come out from between the leaves, upon 
foot-ftalks which are three inches long ; they are 
formed into a clofe fpike, or katkin, forming a co- 
lumn, lying over each other like the feales of fifib, 
The female flowers are fituated at adifiance from the 
male j thefe have a fwelling cylindrical empalement, 
out of which rifes the petal of the flower, which 
hath a long funnel- fibaped tube, fpreading at the 
top f 
3of 
