1819.]} Scientific Intelligence. 69. 
prussian blue be mixed and triturated together in a mortar, 
so as to make as intimate a mixture as possible, and this mix- 
ture be boiled in a considerable quantity of water, the liquor, 
before it reaches the boiling temperature, acquires a green 
colour : it then becomes brown, and there remains a precipitate, 
which does not recover its blue colour, though treated with acids. 
The liquor has the property of forming a very fine prussian blue, 
when treated with a solution of sulphate of iron mixed with an 
equal volume of solution of chlorine. When the liquid is evapo- 
tated, no gluey substance is deposited ; but if it be reduced to 
a small volume, and allowed to cool, it gives a glutinous matter, 
which dries in the open air, and is again easily dissolved in water. 
The starch then is altered in its nature, and converted into a 
kind of gum.—(Ibid. p. 325.) 
IV. Deaths in Paris during 1817. 
The following tables are so curious and so instructive that I 
have copied them from the annual report published in the Journal 
de Pharmacie. 
Weenie 1, LNT ty sieia iets aste ste» b,0-0i9-0.9,,2208 OO 
—_—_—_— 1816 OIE LO SUE ie IP NCIC 1 PKO Si inyeusic 19,805 
oe 
PeEERS ID ANY wo Cog cata aie es och a: ert 0Ol 
_ These deaths consist of 13,555 who died in their own houses; 
V1Z. : 
Males. eeoeoreereeeer ester sees 6,599 
Females. ........ pees ae 6958 § 13:555 
The remainder consist of 276 dead bodies deposited in the 
Morgue, and 7,827 who died in the hospitals, viz. 
Males. ..... Hipeleted Jide ssc BOS 
Females. ........ See dik 3 909% A827 
The number of persons who died of the small-pox in 1817 
was 488, viz. 
Males, 3:24 aeeseashinwa. odds 236 ¢ 486 . 
Bemales, «. sutaut Space t ce ace eee 
The number in 1816 was. ......eeee0+ 150 
PR GOM TA AES ectikite « ieee pA Qe wae $36 
The 276 dead bodies deposited at the Morgue in 1817 eon- 
sisted of 
RINGS n ere tis vtec ee be "71 ¢ 216 
TIE MRA yeti 7 nestle ob iy aed Bw | 
The number of drowned in 1816 was.. 278 
And that of suicides.....ecseeeseees 188 
Suicides in 1817. COC COOO TEER EOS 197 
