HEM 
meralopia as denoting fight during the day, and blindnefs in 
the night (out eis in the tranfla ation of Boerhaave) ; 
cord- 
ingly the aeae ation ae the term, as ‘flat Ae i “thé latter, is 
from pez, the day, and wt, the eye, which they cdnceive to 
fettle the meaning of the word: as day fight; end in the a 
fame way nyCtalopia is deduced froin w°¢, the night, and wl, — 
* which sponses with t ie interpretation of night-Jecing, or 
‘wifus nofurnus, as B alls it. (De Morbis Oculorum 
. 161.) Some of the ‘Colton batons and interpreters oF 
Hippocrates have adopted the fame view of the fu = (h edt, and 
“confounded the ny¢ctalopia with the day-blindnefs (hemera- 
opia). See Foéfius in Gicon. Hippocrat. But Galen, the 
belt interpreter of fome difficult paflages in Hippocrates, 
calls the nyétalopia * night-blindnefs 5?’ and Aétius, Paulus 
Egineta, Actuarius, Pliny, and Celfus follow the fame in- 
terpretation. Monf. Dujardin, who adopts the fame figni- 
cation of the term, fay 8 ‘st “* Hemeralopia is Pa from 
three Greek w orden tater, the day, ar«2, blind, a 1» the 
eye, meaning therefore diurna cac ia, ‘of diurnal blind 
and in like manner nyctalopia, deduced from w, and the 
tnd other words, pe nodurnal blindnefs.”’ (Sce Journal 
de Medecine, tom. xix. p. 348.) In the fame fenfe Dr. Hil- 
ths ieee of Barbadoes, p. 298. fecond 
berden (Medical Tranfaétions, vol.i. art. 5.), 
and fome Sehr learned modern phyficians, have employed the 
terth. Indeed the true derivation -o e terms feems to 
be from yea and w% refpeCtively, with zawt, which confilis 
of wl with the primitive a, and the a introduced for eu- 
ane 
the fun does not fhine out, as not to be able to fee; as we 
fometimes fee in an inflammation of the iris or retina, though 
ho inflammation is prefent here, but too great a fenfibility 
of thofe parts, fo that they cannot bear the light of the day, 
but can dilate. the pupil of the eye, and fee very well in the 
night. I have but had an opportunity of feeing two perfons 
who laboured under this dife et 8 ab or nothing has 
are a. people in Siam, in the Eaft Indies, and alfo in 
Africa, who are all of this cat-eyed fpecies, or fubje€& to the 
difeafe of being blind in the ra P ig and feeing well by 
night. (Mod. Paes Hitt. vol. 
uvages affirms that the he: Rae ne in his nomenc'a- 
ture, called Amblyopia crepufcularis) had, about two years 
before, been in fome degree epidemic in the neig heod 
of Montpellier, in the villages in damp fituations adjoining 
the rivers, and particularly affecting the foldiers, who flept a 
in the open damp air. They were cured, he fays, by blittering, 
Wor with emetics and aa and other ev acuants. 
ofo]. Method. Clafs VI. Gen: ITI. Spec. I.) ~ 
Boerhaave has mentioned a Shee of this difeafe, occa- 
_fioned by an immoveable contraStion of the pupil; for 
- Which, howeyer, he could not fuggett an fafe or probable 
remedy y> efpecially as the difeafe occur d principally in old 
fellor Beira; who has‘a chapter on the fubjea of 
\ 
: HEM 
hemeralopia Which he confiders as a partial amaurofis, has 
fallen ommon error of soufounding it with night. 
blindnets. "(Oblereatiohs on Dif. « of the Eyes, tranflated by 
be p- 499 ) See Rie ALOPIA. 
the fame opinions as the Seribes and Phas ; only that 
they denied the refurrection of the dea common with 
ie eth and retained a few other of the j pmeiees 
) 
x, he “eas who pafs i in the Eaft Wade the de nomination of 
Sabians, calling themfelves Mendai Iihai, or the difciples of 
John, and whem the Europeans entitle the Chriftians of St, 
John, becaute they yet retain fome knowledge of the Golpel, 
are artical oe j ewith ee and feem to ha ave bee n de rive “d 
lead as the chief of ® Jewith Erecocrohanena The 
ambiguous Chriftians dwell in Perfia and / and prin- 
Pay at Baflora; = their eligion cope in bodily 
eremonies, whch the prielts 
mingle w ith this faperalios fervice. Mofheim’s Eccl. Hitt, 
vol. iii. 
IITEMEROBIUS, in Latomology, a genus of Neuroptera. 
The mouth is armed with a fhort horny mandible; the jaw 
cylindrical, fright, and cleft ; feelers four, ga ext and 
filiform ; flemmata generally none; wings deflected and not 
folded ; free ae » projecting and Nias than the 
agi which i is conve 
eres ae 
merobius maculatus, a fpecies in which the fe 
very diftin&, Latreille calls Ofm lus. . In orydalis (He- 
merobius cornutus of Fabricius) the wings reft horizontally ; 
the antenne aré pare ; and the mandibles very long, 
advanced forward. The wings likewife reft in a horizontal 
polition » Piaubades, but in this the antennz are pectinated 
inftead of fimple, and the mandibles are neither very long, 
nor advanced forward ; and, lattly, in Sialis the wings, when 
t-reft; are difpofed ina roof-like form, the wings being 
de flected, vad rag a little’ beneath, and meeting together 
a longitudinal line at the dorfal future ; the antenne are 
fimple, and the laft j ‘dint a 3 fa the feet bilobate. Scheffer 
had lon ng befo ore obfer. in the genus Hemero ius the 
omen grows flender t coward its extremity, that the wings 
are in fons fubjects incumt and in others deflected, and 
feet te 
ompoled of five es 
to the above -mentioned 
miata | are 
a 
os 
a rkable an 
{ant {mell, as we find in the {pecies bila, § a iad of of Homer 
bius cilled in En ind the “thun Be is 7m the 
