580 
THE GARDENERS’ 
CHRONICLE. 
water in pipes, for it is in some respects a SF sere 
as compared with the — Peni cay r desce 
the balloon in water involves a larg antity of friction 
poses ahers particles of the fluid, gadoer as there is a 
constant displacement of the seer a a rush of the 
se | 
at of | 
ae pet a... 
rful 
Th ne facility with whi ich 
is a fact which, hike the fclity w with which carria 
|b up by euperionee in | 
opposition Itis, never- 
Sat 
may | 
nde 
are fechy erste sions to warm suns rh aed atmos; heres, and 
how —— jetty t in treati y= pe 
armed < 
to 
theless, a bob scasea when n propery considered, per- 
water so displaced to fill the € space v by 
balloon. ren intestinal cur- | 
not produced, owing to igno nce ae its elementary prin- 
P 
£, 
and which never can x be produced in opposition 
wn that this 
friction in a pipe: I 
am ote owever, to believe that fuids conform to the 
example of _ all other things, and that friction amongst 
form bore. ar it be ped = these atentane: are those | 
to the Ladani pi 2 
tienes. Tarning, a few days since, for another. ween, 
Roscoe's Lorenzo de’ M. edict. I stumbled “br fol- 
neat passage, in a letter from ery tiano to Ficino :_ 
In looking st water flowing by the side of a ship or the 
in. those parts. which come. in contact doer 
ith th ite ii ther. There is never any par 
tion of sensible frictio wee rotons fluid and the solid ; 
whereas in any case where the friction can be determined 
80 8s to take place in the Aid rather than against the 
“When you are incom mod. s he, “ 
heat t of the season our rete tat Cog g. you - 
notice. Sea an etween the prevent ace of ‘the movn. 
tain, we have here water in abundance, and being con- 
— re aber seg so 
glare 
Dyes oe find little incon. 
nience fro f the 
ENTOMOLOGY.— 
o. XV. 
ese animals is very 
containing water, will simply illustrate the eee of 
hat 
siderable. Few persons P robably are aware that an ordi- 
rome news a pee, mar seg a et contents 
when the wate urth of the time that 
rr the 
o 
some 
pa movement. — bi all of tk 
an nding arrow, is suppos 
bet 
Earwics. —The structure of oe 
bu ut, common as they ari vay few r per 
prs of aversion, every one only thinks of Pace 
them; and this, unfortunately, arises more rly 
pres of terror, dicta y the vulgar notion of 
their getting into the human ear, than from any ra 
motives. It is certainly remarkable that in several countries 
these insects have received vy aman bers as in 
Englai and, of this disagreeable p propensi sit n France 
in Sweden 
Pp) om 
cause, the ee. In a the ascending and de- 
cending c' ould aticdiee with each other, as 
before Bo sia in reg ard to air, ‘creating here — 
eddies In 
the iegrey preventing this Sollee meg ‘and is 
preventing Me the exchange of temperature otherwise 
than by circulation, icone greatly increase its velocity; 
tion, and the inter-fric es consider- 
able with the pure fluid, is i one-fourth b 
the mixture of alittle soap: ot, therefore, advii 
the water for hot-water circulations wher 
the po: feeble, but the fact is stated for the benefit of 
any who to e the tion. 
uld be still further increased by 
“ horizontal dissanoe a betes the ascending and de- 
es columns, which a cause them to exhibit 
er differences of s apecitie uty 
Oremask or Earworm; _ but these trivial names Were 
nd would naturall 
lives of manki ye xpose 
annoyances, and when prejudice lost nothing Petey the 
y' 
| superstition and ignorance which then e: 
g; De Geer, however, had long since stated ae 
female broods over them like a hen, and apparen 
ects and feeds her young: I had placed a a weaeus rm ep, 
, which th 
big very lately I had never seen the pts ‘of the Ear- 
G ng 
fc she soon laid 14 
eggs on the earth ; rn were cpeke vee ellie (fg: ° 
ina short time she removed them 
leaf, and I found her nestling recta mptiomre uno 
nately ran were either ores by the parent or 
and 
are equal ly active, but much h smaller, of co 
e pail then. 
he fore es ee eee proved by er: 1. Freedom from “intestinal | movements. 
with a cut-water_ solid, or bet the resistance: offered by Substitut uting the friction of water a t some other 
piers of bridges di y formed. When the cut-water oo for that of water against water. 3. Difference 
of a bridge is so formed that the water runs the | of 5 specifi c gravil ity, ous causing the adie to becom me auch 
be pte end, sie oc arog ia eit breton A only to imagine this last chamber to be 
what is called dead water, against which the stream pre ae woeaually divided, potest what may be called 
impinges and rubs, instead of the stone, incre: a boiler at 5, with a cistern at c, 
the resistance very = apparatus in the sim simplest form. 
urse, 
edyrty destitute of wings, and the forceps are straighter 
pest ot horny 5 when they have Saevier at the pupa state 
they 
rack Be rolimentary © elytra: they cast their 
time to time, and immediately after this operation they 
are ofa vyelbesdashs kite; excepting the blackeyes. Having 
arrieed at their final state, both sexes are provided with 
skins from 
ras ij 
a 8 
+ ta 
| eck and F been taken on th 
sie hae of: the eae ti the 
well-arranged pipes, then, the friction is doubtless | general opi nion ; it is, Geers not the ios remriable 
very small ; but the inertia of the water is an obstacle of | 
amount, which, like the friction, will increase | A. Ainger selves of it. There is a small species called Labia minor, 
with every change of ications with bends, and with nis seems attached to muc ry ges at sometimes flies 
P. S. I was much gratified to find my proposal tor ill cabarets rms in the sunshine, that I was 
The value of the resistance offered by friction and iner- | ¢2tth- _— pr cies. of a soot houses supported | on, sc taiessil with in an roy when sketching 
tia will increase rapidly also with increased velocity, a na | by the result thy ees cident put related Uy Mr. from nature; and I very much doubt if our large com- 
it Mackenzie in — of Jaly 2 mon | Page a fiy in the gh for their + wings are are too deli- 
y ti eh I doubt, however, h th 
the quantity of resist- | Which he su » WOU co god as hang cape Earwigs, one of which is 
it is certainly below that of the | cessible ede = Spree vity, where na tha Forficula rosie having met with it 
and which is more easily esti n f them into troogh-pies, the vapour from in Scotland ; but it is equally aad in the South of 
’ plicated he soil would be ~ most effect England, under | bark, stones, &c.; the males are 
numerous, if the sum of the products of the specific gravi- | means of distributing heat, and ps ere Sia imanias y longer forceps than our common 
aye eee by their jee essity 0 a fering’ if soy would tend very | garden one has, whic by Linnzeus Foi ree T 
eee than the correspond- | much to preserve t aa in that loose ion which rj the eyes : 
columas, will result | is ferorable wal _— vanes of — eee ck A tehek, indeed, paar i — tae gga Il a e horny 
this might f Pat - he elytra, which 
a minute example | tion; for arti ficial » watering is sy man on respects indif- | have a sinuated brow di —_— 
roster aap —— ferent substitute for rain—thou gh rain, perhaps, and | the dise =e the maaae a dark-brown ; the wings, when 
especially | rE Je a shell called Halos or avail 
h attention to undo. It might, 
(5): The female (fig. 2) has seven wanes ee 
gra € th he 
aay Se estes 2 Geriesd ott sheltered by a glass reof from ¢ the rains Pala exten Sesion 44 vhs iyo these are on the 7th 
t of | from night t radiation, but freely exposed to the air and | and 8th fi miele po aes in which sex thereare 
amount, is in favour of the movement. aa Sree The mode of wk Te over the cavity by hollow earthen | slight pean sory ety oe eee 
below the level o tho star} aba ee esis ae | voussoirs. ms ), with a few internal 
no obstacle, the fem: | £070 
the heat, is not essential. An arch 
turned with beke laid | open-wise, asin the walls: of hot- 
teeth at the base, and both sexes have a short ra ale 
inted foot. the ridden # 
running into the apertures, might possibly answer the 
purpose. 
While on a — of plies tote it may be worth 
while het he fact tioned in ae near: iain 
of Wi 
arg and the A des on claws at the apex. 
as they leave the nai 
Sarceen their de devastations, opera their skins as 
then they do 
or hemp, ip i vessels Pp 
water, the t Meccaplesioks of which is (I presume) commun 
eated to the trees by the capillary action through the 
cords. OF inc isa gerne and if the statement of its 
correct, a ingen ious process. tt wi 
cin | Mialid otk Ghin-cubject, the palpable absurdity of 
Qaeeame vegetables by means of the | 
is often the case with this = piprpere 
ong, atc very soft, with every 
size up to the full stature of their 
protected by a west ifal coat of mail. 
a garden, howeve 
aware of the mischievous works of 
cated ure the ae 
whic! h ai re suspended 
{to the efcacy of wren the earth and the plants, in 
of warming the air: indeed, the delaniie:thak hen 
attempt- | 
oS eae Cartivs Brit. Ent, pl. and fol. 560. 
