73% r C H- 
aiid fagacity of. another animal, who, to all appearance, 
had rendered its offspring perfectly fecure. The follow¬ 
ing remarks on this 1'pecies are the fubftance ot a paper 
in the Tranfaftions of the Lintiasaiv Society, by Thomas 
Mariham, efq. the fecretary. 
Ichneumon manifeftator: body black, without fpots ; 
abdomen fertile, cylindrical, legs rufous : “ On the 9th of 
June, 1787, I difcovered this _infe& fettling on the top of 
an old pod, - as 1 1 was walking in Keniington gardens ; and 
its peculiar appearance and extraordinary actions led me 
to obferve it attentively. ' It moved rapidly over the top 
of the poll, having its antennae bent in the form of an 
arch, and with a jtrong vibratory motion feeling about 
until it came to a hole made by fome infect, into which 
■it thruft its antennas quite to-the head. It remained a 
minute at lead iu this fituation, apparently very bufy ; 
and then, drawing out its antennae, came round to the ex- 
actly-oppbfite fide of the hole, again thruft in its anten¬ 
nae, and remained nearly the lame time. It next proceed¬ 
ed to one fide of the hole, repeating the operation, the 
antennae quivering in a lurprifing manner; and, having 
now again drawn out its antennse, turned about, and, 
dexteroully TneUfuring a proper didance, threw back its 
abdomen over the head and thorax, at the fame time pio- 
jefting its long and delicate tube into the hole; which 
when it had accomplifiied, it brought its body into a di¬ 
rect perpendicular fituation, the two {heaths of the tube 
[landing dire&ly upright, as did the abdomen, while the 
tube- itlelf proceeded from the anus down the under fide 
of the abdomen into the hole. After remaining near two 
minutes in this pofture,. it drew out the tube, turned 
round, and again applied its antennae to the hole foi neariy 
the fame time as before, and alfo inferted the tube in the 
fame dexterous way. This operation was repeated three 
times; but approaching too near, in hopes with a {hallow 
magnifier to obferve what pafled at the end pf the tube, I 
frightened it away. My curiofity being excited, 1 waited, 
but in vain, for the return of the fly, and had it not in 
my power to vifit the fame fpot for a week ; but on the 
16th of the fame month I was amply gratified, luckily fee¬ 
ing many of them at work. They appeared to pierce the 
folid wood with their tubes, which they forced in even to 
half their length, conftantly parting them down the abdo¬ 
men between the hinder thighs, which clofed and kept 
them ftraight whenever any over-refiftance forced them to 
bend. I was fo aftonifhed to fee an inftrument apparent¬ 
ly weak and {lender, able, with the ftrength of fo ltnall an 
animal, to pierce folid wood.half or three quarters of ail 
inch deep, that I attended to every motion of the infeft, 
hopino- to difcover m.what manner it was done; and on 
very particular attention I obferved, that all thofe who 
appeared to pierce the folid wood, did it thiough the cen- 
■ tre of a fmall white fpot refembling mould or mildew, 
which on minute examination with a magnifier I found 
to be fine white fand, which delicately clofed up a hole 
made by the Apis maxillofa, and where I have no doubt 
the bees’ young were depofited. # In deep holes that were 
not clofed, the inferi: not only thruft in the whole tube, 
but in fome. cafes the whole of the abdomen and poftenor 
legs, leaving out only the two fore-feet and wings, which 
it placed hi contrary directions like two arms. T. he grooves 
which inclofe the tube were alfo proje&ed up the back, 
with the ends appearing above the head out of the hole. 
“ In Odober I faw another of thefe infefts on a ftrong 
poll, on Leflnefs Heath, near Erith, in Kent. It had fixed 
its tube before I arrived, and I waited a confiderable time, 
in hopes it would withdraw it; but, a gentleman who 
•was with me being impatient, and doubting toy account 
of it, I with difficulty forced the infetf: to draw it out, and 
then opened the hole, which was clofed with a ftift pellet 
pf turpentine. Each fucceeding year I had opportuni¬ 
ties of feeing many of thefe Infeds at work ; but on the 
of July, 1791, I again paid very particular attention 
\io fome I faw in Keniington gardens, but moie immedi- 
I C H 
ately to the action of the antennae, which they thruft into 
many holes and crevices, but foon drew them out, net 
finding, 1 prefume, a proper fituation for their eggs. I 
obferved one with its tube inferted into the fide of a rail, 
which I watched with great attention. It had fixed it- 
felf over a frnall patch of reddiffi fand that covered the 
hole of the Apis maxillofa, three of its legs being placed 
on each fide the fpot; the abdomen was bent inward, fo 
that the end of it was embraced by the hinder thighs, 
which kept it in a {ready pofition, the whole tube being in¬ 
ferted in the-rail. It frequently drew out the tube about a 
quarter or three eighths of an inch, and thruft it in again 
with great force; in the interim between thefe thrufts, I 
could plainly perceive a motion in the apex of the abdo¬ 
men connected with the tube fimilar to the puliation of 
an artery, which motion ceafed whenever the action of the 
tube took place. This pulfhtory motion I conceive was 
occafioned by the eggs paffing from the body of the in- 
fed: to the tube; and I felt an. inclination to feize the 
little animal at the moment, and examine the tube, which 
is of a fine crimfon colour and femi-tranfparent, to fee if. 
an egg might remain in it; but an anxious deiire to fee 
the whole of its operation prevented me; and, when it 
had finiffied its work and withdrawn the tube, it was too 
late. Another particular inftance of fagacity in this lit¬ 
tle animal is worthy of remark: the grooves or cafes cf 
the tube were as ufual projected in a ftraight line from the 
abdomen; but'the wind being veiy powerful, rendered it 
difficult for this delicate animal to maintain its fituation, 
as thefe long cafes, which are feathered, were fo ftrongiy 
aded upon by the wind as to endanger its being overfet 
feveral times. To remedy this inconvenience, it, with a 
wonderful dexterity, brought them down between its legs, 
and projeded them forwards under its body toward the 
head, by which means it retained its fituation fecurely. 
It is now {’even years lince I began my obfervations 
on this little animal, in' which time I have never been 
able to difcover an ichneumon that I could fufped to be 
the male ; and am therefore led to make thefe remarks pub¬ 
lic, in hopes fome gentleman may have been more fuccefs- 
ful, and by whofe means its hiftory may be completed.” 
ICHNOG'RAPHY, f in architedure, is a tranfverfe 
or horizontal fedion of a building, exhibiting the plot of 
the whole edifice, and of the feveral rooms and apartments 
in any ftory •; together with the thicknefs of th,e walls and 
partitions ; the dimenfions of the doors, windows, and 
chimneys; the procedures of the columns and piers, with 
every thing vifible in fuch a fedion. The word is de¬ 
rived from the Greek footftep, and yfatpu, I write, 
as being a defeription ot the footfteps or traces of a rvork. 
Among painters it fignifies a defeription of images or of 
ancient ltatues of marble and copper, of bufis and femi- 
bults, of paintings in frefco, mofaic works, and ancient 
pieces of miniature. 
ICHNU'SA, an ancient name of Sardinia, which it re¬ 
ceived from its likenefs to a human foot. 
ICHOG'LANS, / The grand fignior’s pages ferving in 
the feraglio. Thefe are the children of Chriftian parents, 
either taken in war, purchafed, or fent in prefents froria 
the viceroys and governors of diftant provinces; they arh 
the molt fprightly, beautiful, and well-made, that can be 
met with; and are always reviewed and approved of by 
the grand fignior himfelf before they are admitted into 
the leraglios of Pera, Conftantinople, or Adrianople, be¬ 
ing the three colleges where they are educated, or fitted 
for employments, according to the opinion the court en¬ 
tertains of them. 
I'CHOR, f. [Greek.] A thin watery humour like fe- 
rum ; butfometimes ufed for a thicker kind flowing from 
ulcers, called alfo fanies. 
ICH'OROUS, adj. Serous; famous; thin ; undigefted. 
—The lung-growth is imputed to a l’uperficial famous or 
ichorous exulceration. Harvey. 
.ICH'TERHAUSEN, a town of Germany, in Upper 
Saxony, 
