1853.] 



SCIENTIFIC INTELLIGENCE. 



191 



Slonthljr Meteorological Register, at Her Majesty's Magaetical Observatory, Toronto, Canada West.— February, 1853. 



Latitude 43 (Iff/. 394 mhi. North. Longiliide, 79 dri/. 21 min. ]Ve.it. JStevalioH above Lake Ontario ; 108 /csi. 



Barom. al lem. of 32 deg^. Temperalure of.heair 



6 a.m. 2p.m. lOp.H. MEA.V b.i.M 2p,.n. lOp M ji'n 



23 .SOS 

 .578 

 .820 

 .459 

 .S74 

 .741 

 .92.^ 

 .«73 



.317 

 .102 

 .75j 

 .3.M) 

 .0.9 i 

 .723 

 .4,S0 

 .810 

 .713 

 .030 

 .27.') 

 .473 

 .KS!) 

 .210 

 .4V) 

 .5')4 

 .fiS6 

 .7.5.5 

 .337 



29G9S 

 .3.55 

 .S9S 

 .646 

 .i-21 

 .937 

 .803 

 .772 

 .8.53 

 .074 

 .137 

 .S04 

 .293 

 .727 

 .571 

 .2o5 

 .832 

 .62, 

 .4iW 

 .30 > 

 .443 

 .197 

 .185 

 .479 

 .5.S2 

 .68H 

 .62) 

 .149 



9.6.56 

 .640 

 .805 

 .831 

 .C5S 



.870 

 .803 

 .7l7 

 .102 

 .4s6 

 .68 



30 9 35 2 

 35 5 I43 4 



. 782;35.2 3 1.5 



18.2 :22 9 



20 6 



292 



804 10 8 

 160 20.0 

 26) 33 4 

 748 



6.54! 



194 

 15 1 



23 3 3 



32,3 35 



18 124 I 

 12.9 l!)0 

 10 4 2)0 

 190 |I93 



6 5 27 4 



32 7 ,37 7 



2,)4 2i.3 !iqO 



12 3 2o.2 



21 8 31 6 



19 7 35 9 

 21.^ 35 7 



235 35 36 6 



'm' 29 539' 29 545 23.5)7 2 J 5=2 1. 21 U7 



30.5 

 35.0 



34 1 



35 2 

 21.6 



S6 

 20 li 

 132 

 3,) 9 



20 

 II. I 



95 

 24.3 

 26.2 

 17.5 



7.) 



15 1 



23 9 

 2)9 



16 8 



21 9 

 274 

 27.3 



31 33 



37 07 

 33 33 

 37 5 



28.6; 



1 1 ,20 

 172. 

 12 67 

 2.) 37 

 2 ) 7J 

 12.72 



14 3 

 27 2: 

 39 6: 

 1.950; 

 12 15 

 15.13 



19.90 

 32.97 



18 80 



19 90 

 2182 

 26 97 



Tension of Vapour. 



6a M. 2r.M. lOp..!!. m'n 



I 147 0.171 0.1.55 



186 .2l4| .180 



.143 .160 .17.) 



.2J1 .249 .167 



.182' .15) .114 



.087' .167 



.046| .092 .055 



.038, .098' .097 



,0i7i .047 .064 



071 



12! 

 072 .077 

 .lOii .1U5 

 ,168 .193 .12:) 

 077 0,18 .095 

 Oii3 Oso .047 

 OoO .09 1 1 

 095 .087 



.073 



.0-55 .122 



.174! .195 



.0.43 .075! 



.061 .082 



.101 .M4 



.093 ! .145 



.1271 .1<9 



210j!o 1100 1350 1110 1 



M. 2 p. ill 10 P.M. M'.N 



6 A. M. I 2 p. ji. 10 p, .M Ini-li. Inch. 



E S E 

 E 

 \V 

 E 



,^W I) VV 

 N N W 

 N I. E 



N 

 WbN 

 S S \V 



s w 



N 

 NWbW 



s 



S I) w 

 w 



.V E I) N 

 \V I, N ' 

 W S W, 



w 



.■5 E b s; 



X N Wi 

 N'W b N 

 VV bS 

 N bE 

 N E I) N 

 E b N 



E 



S 



S 



W S VV 



N 

 NW I, N 

 N^J \V 

 .S W I, S 

 VV I. S 

 S VV 



sw 



NE b N 



\V 



N IVW 



S VV b S 



N E 



\v 



E N E 



N N E 

 N \V b N 

 S VV bS 



Calm. 

 N VV b N 

 NWbVV 

 N VV b N 



SSVV 

 E 



ENE 



EbN I - - ' - 



Vl'bS ,In^p - 



V. 325 - 



SWbW, - - : - 



N 

 N NW - 

 N NVV| . 

 N VVi.VVi - 

 VV S VV| - 



sw 



NVVbWO.050'0 

 N N E 



60 



1 



0.2 



- - 10 2 



VV 

 W N W 



? s w 



VV bN 



Calm. 

 N NW 

 N N E 

 W bS 



S W 

 N b W Jnap i 



NW i 

 W S VV, 



N E 

 N N E ! 

 E bN 510 3 

 Calm 0.145 



0.2 



Smn of i/ie At/iiosp/teric Current, n viilcs, rtsolved irUu the four Cardinal 

 direoliuiis. 

 WvM. Smith. Ea.«t. 



Norlli. 



2031.65 

 Mi*an velocily of llie wind 



Maxiininn ve'ioi-ily - - - 



Mo.^l wiudy day - - - 



Lea.si wmdy day - - - 



JVIi).«l windy hour - - - 



Lea>l windy hour - - - 

 Mean diurnal variation 



< 6.63 Ml'..< S.,S7 V1IV!iti7 I 03012.^ 



' Moniblv range; 

 44'8 



2215 79 924 32 941.13 



- 7 29 miles per hour. 



- 23 9 mi's |ier h'r, Irom 8 lo 9 p.m. on 5lh. 



- 23rd : Mean velocily, IG.V) miles per hour. 



- 19lh : Mean velocily, 3 02. diUo. 



- noon: Mean velocity, 9.13 dillo. 



- midni: Mean velocily, 5.87 d.uo. 



- 3. 26 miles. 



Hiahesi observed Temp. - 43.4, al 2 P. M., on 4ih 



L ■wesi resisl'd Temp. 1.4, at A.M., on Slii , 



Mean Hi-lie.-l ..bserved lemperalure - - 29 75 ) Mean ilailv rang 

 Mean KeuL^iered Minimum ----- 15,35 i 14.40 



Grealesl daily range - - - - -35 4 from 2 P.Monllih, 10 7.\.iVI. on 12ih. 

 ■Warmest day - - 4ih - - - ,vlean Temperature - 37 58 ) DifTerence : 

 Coldest day- - - 7ih - - - Mean Temperature - 11.20 $ 26,33 



The " Means " are derived from six observations daily, viz., at 6 and 8, 

 A. M., and 2, 4, 10 and 12, P. M 



Ciiinparative 'Pable for Febrnary. 



The column headed "Magnet" is an allempt to di.stinguish the character 

 of each day, as regards the Ireqnency or extent of the flitciualtons of the 

 Magnetic declination, indicated by thK.self-reglstering in.slrumenis at Toronto. 

 The cla.'v.iilicaiion is, to some extent, arbitrary, and may require future 

 modification, but has been found tolerably defimie as lar as applied. It is as 

 follows : — 



(n) A marked absence of Magnetical disturbance. 



(b) Unimpiirianl movements, not to be called di>iurbanfe. 



^r) I^larked disturbance— wnellier shewn by ficqiiency or amount of 

 deviation Irom the normal curve — but of no great iinporiance. 



i/t) .\ greater dear, e of disturbance— but not of lon^ continuance. 



{/■) Con.siderable distuibance — lasiing more or less the whole day. 



(J) A Magnetical disturbance ol the first cla.^s. 



The day is reckoned from noon to noon- II two letters are placed, the first 

 applies 10 the eailier, the waller to the later pari of the trace. Although the 

 Decliiiaiion is parliciilaily relerred lo, it rarelv hap|iens that the same terms 

 are not applicable 10 the changes of the Horizontal Fori e also. 

 Hishe.M Barometer - - 29P37,at 2 P, M., on 61I1 ^ Monthly range: 

 Lowest Barometer - - 29.074, al 2 P.M., on lOlli J 863 inches. 



Royal Ir.stitiition, January 21. 



"observations ox the magnetic FOKCE," Br PROF. FAKADAT. 



Inasmuch as the general considerations to be brought forward had 

 respect to those great forces of the globe exerted by it, both as a mass 

 and through its particles, namely, Magnetism and Gravitation, the 

 attention was first recalled briefly to certain relations and differences 

 of the two which had been iiisi-s^ted upon on former occasions. Both 

 can act at a distance, and doubtless at any distance ; but whilst gravi- 

 tation may be considered as simple and iiupolar in its relations, niag- 

 netisai is dual and polar. Hence, one gravitating particle or system 

 cannot be conceived to act by gravitation, as a particle or system, en 

 itself; whereas a magnetic particle or system, because of the dual 

 nature of its force, can have such a self-relation. Again, either polarity 



of the magnet c force can act both by attraction and repulsion ; and 

 not merely so, but the joiut or dual action of a m.aguet can act alsoeitlier 

 by attraction or repulsion, as in the case of paramagnetic aud diamao-- 

 netic bodies : the action of gravity is always that of attraction. A,s 

 some further relations of the sun aud the earth would have finally to 

 be submitted, the audience wei'e reminded, by the use of Arago's idea 

 of the relative magnitude of the two; for, supposing that the centres 

 of the two globes were made to coincide, the sun's body would not 

 only extend as far as the moon, but nearly as far again, its bulk being 

 about seven times that of a globe whicli should be girdled bv the 

 moon's orbit. For tlie more careful study of the magnetic power a 

 torsion balance had been constructed, which was shown, and its mode 

 of operation explained. The torsion wire was of hard drawn platinum 

 24 inches in length, aud of such diameter that 28.5 inches weighed one 

 grain. It was attached as usual to a torsion head and index. Tlie 



