7 
THE AGRICULTURAL GAZETTE. 
462 sah Satin bt [Jom 5, tg 
or not, is drawn gradually through the whole sub- | found its way through the upper end, and there- p under € one  roof—two-si -storied e = 
stance of he mt and subsoil, thus coming in con- | fore uselessly ; whereas had the drains not been | fact—but in a different sense in mg 
with every portion of it. Our opinio open, this pull, such as it is, would have co-oper- | acceptation of the term which the 
that the Rant ed “ air draining” of land is useless | ate: d’ with the weight of the pct water i lowe orey is the “ground ‘oar 
for any such purpose as thi | (2) tha t ducing the passing of the air through the soil. | the “best?” or “ chamber floor” 
ann ania to defeat any such end as is he he ¢ then have been defending is as he ange 
tem 1.) The special force supposed be | storey is possessed of the same in 
T it. isu useless.—It is useless even when the | utilised by air drainage is utterly insignificant. | lower, and is in fact a distinet 
rains are running :—For can it be supposed | (2 he force in question is rendered entirely SPN entrance. F tinction’s a 
that tunnels 2 inches in diameter 4 feet below | useless by the practice of the air Tainen (3; m houses on this plan « 
s full influence, such as it is, is me ined only| 4, fig. 18 we give the mill 
th t ore, are likely to aerate- the| under the ordinary system of land eda end honse,” of 
em every pore, al y ini y Kaie house,” of which fig. 7 (p, 406) is the aa Y 
a tlm 
land in the way described — in me of the| conduits being closed at the upper e: 
current of air Tüh it is imagined they draw >i ELA ofwhich teas leading te th sa 
through their upper a 4 It is only wh Liye water i ill t an RAS roomee; d the bed-too of which eS 
is thus running down them that air will follow | bworstoned cottages, w = propose to devote a sketch raig Bpa i Pein. chests ie cae 
this water is sinking into them from son sur- or tw show how we may obtain two cottages | bed-closet. Store olone te 
unding soil, what force can e in 
the 
operation there he induce the passage upwards i ie 
B 
such circumstances of this air rev the soi y the 
= supposition of the air being drawn into the 
„it A n d dnas ovomards s the 
tendeney of the current of water is to draw air 
“heat drain, iat. a force it upward into the 
il, of which this water is dripping and 
seian ; 
And we must aaa that this so called ‘air 
drainage” of the land is also useless when the 
drains a R We o not believe that the con- 
usefully aerate the soil in this way, they are boun 
to show (1) t = there i is a current of - Sassigh 
the drain and (2 oe that 
more lies we the one por aan escapes t the 
other. For o pera ye we believe thata particle < 
air in a drain et deep at a distance from 
outlet i jaer inmoveabl as one of sand; butif So 
Were | y, chance shiftin ng its position, and 
yA 1 place within the soil ; Fig. 12. l 
as, eas — by t he influence of a current el In fig. 14, which is a plan of the house above that illustrated in fig. 8, aa is the entrance stair;  theinner eimet 
the 
Tin pia m the open. outlet of the SATE room ¢ c; dthat to. the back bedroom e; f to the front bedroom g; h that to the scullery i. There isa disaat 
fH, aa wou | rather ihe other -end - the : 
uit case if 
it escaped at all it must be oh the land, 
while in the other it would just travel oom 
along the channel outwards to ti 
air devin reall, Pdaf A a 
nper ex a celine oie open to 
is rather to rasan than to eae 
the only useful drainage 
me 
once rg that the. — 
oe eae is in dispute is utterly 
insignificant for «ek 4 purpose uk 
ever—it is indeed the air drainers who 
alone contend for ite es ; but such 
it is, wi tend that to leave drains 
open. at. ends defeats the object ai 
hich iners aii The influence to 
Which we allude is that fri of running Fig. 14. i 
Wal the air in contact with it b ch a illustrates the upper house adapted ‘that shown in fig. 9; a is the entrance. stair, wih “ee 
whi Fig. 15 
current nt of air along — iti is pe living room ; ¢ that to bedroom, and d to the po ooh ea bed closet off scullery. To, apenas m 
duced. If the opening of a drain to the air at its | postion shos bee a ll pe os tant Hom, Tha otan sal ae ae 
it at all, 
aathe í 
curren’ 
Means of bringing it there ive in fig. 16 a plan of the cee benie, of ce 10 (p. 426) is a plan of the lowers OO oome ine” 
‘under daa are open Fn Soth ee. Cece or Fiaim Fd panaga o 6, Mau which tt atg 3p to the fiving room dand bed AT 
] the p € 2 
