396 Scientific Intelligence. [Nov. 
X. Population of the Canaries. 
| 
it. ae 
ag ao 
F Absolute Populati 8 
Yslands, = & solute Population, ee 
rs oe 
a=) 
es Sar 
€¢ Ess 
ey 1678. 1745, | 1768. | 1790. z, 
SDEMETING 1. oS ing mes a0,0 13 49,112 | 60,218 | 66,354 | 70,000 958 
Fertaventura ........ 63 —_ 71,382 | 8,863 | 9,000 142 
‘Grand Canary ........ 60 20,458 | 33,864 | 41,082 | 50,000 838 
Palma, ...c60-ceece0+ 27 13,892 | 17,580 | 19,195 | 22,600 837 . 
Lanzerota...... mip'b/ssa’p 26 — 7,210 | 9,705 | 10,000 354 
Gomera ......2..265. 14 4,373 | 6,25] 6,645 | 7,400 528 
Err.) s/ob pia'deoalde oS 7 3,297 | 3,687 | 4,022} 5,000 T14 
ROMAN akeiab ys sise' beat 270 136,192 |155,866 |174,000 644 
a LLL LALLA LLL 
Humboldt’s Personal Narrative, i. 284. 
XI. Temperature of the Atlantic. 
The following table is given by Humboldt from observations 
made by him of the temperature of the Atlantic Ocean during his 
voyage to South America :— , 
Temperature of | 
North Latitude, Longitude, the Surface of the Sea. 
Be net eee, oo Be ae ORE i oe 
a Be te ths BS a TO eg elem 
BO 16 sea veccciec: 197 Be cai Mose Meena 
= ye hae area (LAS. Agra neh Rl 35-1 
98 MS 25 es en 
26 TSlinaihs ove Ley BSnewcoagd ede See 
Da ip. cisivtotarhss Yaky hark Wetw. baiswkea «MeO 
By, Gen rs rteiy she din Ovo Ot ot gawd) de FSS 
14 kins cad aie cceaahd 9 OO p bassinet FARE 
15, bheyssctalun te te SOU adh ed. oxystan td, ge 
10; AB) advstan oar otuBS 4934) awd. deakina Fieee 
Humboldt’s Personal Narrative, ii, 59. 
XII. Fucus Vesiculosus. 
’ Professor John, in order to obtain iodine, burnt four ounces of 
the fucus vesiculosus: the white ash remaining weighed 41 drams. 
He found in it manganese and magnesia, but did not succeed in 
obtaining from it any iodine. This was chiefly owing to the small 
quantity of ash on which the experiment was made, and partly also 
to the imperfect method which he followed ; for he seems to have 
been in possession of no other directions except those contained ip 
Davy’s first paper on iodine, and they are quite inaccurate. 
