thè HiOst brilliant state to that of total 
darkness, ar.d afterwards résumé its fcrmer 
brightness. Carradori ascribes this phenom- 
enon tc a reirainder cf irritability or a 
stimai US produced by thè air, whicli appears 
thè nere prcbabie^ as a meohanical irrita- 
t icn produced thè same effect* 
A slight ccmpression deprives thè lucide 
of their power to cease shilling* The author 
is inclined to beìieve that thè movement by 
which they conceal their Ii>^ht is executed 
by draTiving back their phcsphoric substanoe 
irito a particular iriembrane or tunic. He sup- 
pcses al so that thè sparici ing censi sts in a 
treiiibling or oscilla ticn cf thè phcsphcric 
mass* He ps cf thè opinion that there is no 
emana ti on cf phcsphoric sub stane e, and that 
thè whole phenoir-enon takes place in thè in- 
terèr cf thè luiiiinous viscera* When thè 
shining is at thè greatest degree of hei^;rht, 
it is so strong that a person may by it easi- 
ly distinguish thè heurs cn thè smallest watch , 
ai.d thè lettera of any type wliatever. 
The phcsphoric pari cf thè lucide does no t 
ex t end farther thari to thè extreme rinp'S of t>^e 
belly. It is there enclosed in a covering 
cemposed of two pcrtions cf nerrbranes, cne 
cf which fcrms thè upper and thè other thè 
1 ower part of thè belly, and which are joined 
tegether* Behind this receptacle is placed 
thè pihosphorus, which resembies a paste, 
having thè smeli cf ^arlic and very little 
taste* The phcsphoric matter diffuses from 
a sort of bag on thè slightest pressure; 
when squeezed cut this matter loses its splen- 
dor in a. fev/ hours, and is converted into a 
white, dry substance* A pcrtion of thè phcs- 
phcric belly put iute oil shone only with a 
feeble light and w^as socn extinguished* In 
water a like portion shene with thè sane vi- 
vacity as in thè air, and for a miuch Icnger 
tim^e* The author thence ccncludes that the^ 
plic spho res c enc e cf thè lue iole is net thè ex- 
