no cther change. Cn being replaced in thè 
nitrcgen it continued tc shine for 1/4» 
hour, but iror languidly# Finally thè lu» 
mincus organ was excised^ and thè “fosforio 
paste’* returnd tc thè gas; it continued to 
shine fcr mor than 1/2-hour, later dying 
cut becaus thè remainder was entirely dry, 
Hydrogen: The live insect continued to 
shine as in a ir, for mor than l/2»hour, al» 
wa:>'^ril iiant but fading (thè Italian is 
”but\ always less’* »McT)) , By introducing a 
fine ircn wire and rapidly turning it tc 
irritate thè insect it was stimulated to 
p ro due e me r 1 i p*h t . Th e insect wa s th en 
remiOvec] and irritai ed in thè same way in 
thè air, but no mor light:was given than in 
hydrogen, 
Chlorin: A live insect introduced into 
ghis gas shone for a rnernent mith a mor clear 
iigh'c, which at thè end of 5 or 6 minutes 
was hidden, When reiLOved thè insect was 
alive, but did not .viv liglit, TVie luiriin- 
CU3 organ was replaced in thè gas and gave 
fresh light; it did net display mor light 
on being removed frem thè gas, Ancther in- 
sect alsQ gave a briprhter lie-ht than in thè 
air, but only fcr a fe-w mom.ents ; on rcmioval 
tc thè air it did net produce light even cn 
irritation with thè finger: then it began 
again to I ighteii ;• suddenly tie light disap» 
peard and ccud not be revived as befer, 
and reinaind as if hidden. a third insect 
intreaueed into chlorin almost immediately 
gave thè usuai magnificane e cf light, but 
v/as extinguisht in a few moments. After- 
wards it began a recovery equally brilliant, 
but by leaps, resembling thè naturai soin» 
tiilaticns, but HiOr proìongd. Finally thè 
light was hidden and cn removal to thè air 
thè emission of li^^^'ht was cniy provoked v;ith 
difficulty by irritation. : 
The luminous mattar of a lucida was crusht 
on a card ai.d introlAced into chlorin; at 
