24 



SCIENTIFIC INTELLIGENCE. 



[1853 



Monthly Meteorological Register, at the Provincial Magnetical Observatory, Toronto, Canada West.— July, 1853. 



Latitude 43 dcg. 39.4 min. North. Longitude, 79 derj. 21 min. West. Elevation above Lake Ontario : 108 feet. 



c 



Q 



Barom. at tern, of 32 



cleg. 



Temperature of the air. 



Tension of Vap 



our. 



Humidily of Air. 



Wind. 



Rain 

 in 



[null. 



S'bw 



ilT 



kg 



6 A.M. 



2 P.M. 



10 P.M. 



MEAN. 



6a. M 



2p.m. 



10p.m. 



m'n. 



6a.m.,2p.m. 10p.m. 



m'n 



3 A.M. 



2 p.m. 



10 p.m. 



m'n. 



6 a. at. i 2 p. m. |10 p. at. m'n v 



Inch. 



a 



1 



29.628 



29 C35 



29.656 



29.643 



o 

 64 3 



o 



71 2 



o 

 60.0 



o 

 06.08 



1 i 

 510 0.5220.420 



0.501 



88 



71 



S3 



SO 



N h W 1 SbW 



N N W 



Mill's 



4 33 







a 



2 



.725 



.693 



.603 



.668 



58 2 



68.6 



63.2 



65.07 



.392 .363, .412 



.391 



S3 



53 



73 



66 



N b E : E b N 



ENE 



6 16 



020 



_ _ 



a 



3 



■5oS 



.491 







63 9 



74.7 







.536 .649 





93 



7S 







Calm E 





2.74 0.050 



_ _ 



a 



4 



.501 



.436 



.516 



.484 



68.2 



82.9 



64 6 



72 67 



.573; .375' 514 



.483 



86 



34 



87 



66 



Cairn 



W bS 



NNW 



li 2-ii(i2!) 



_ _ 



b 



5 



.491 



.467 



.588 



.521 



61.3 



76 2 



60.3 



65 3S 



.450 .357 .402 



.411 



So 



57 



79 



72 



Calm 



W N \V 



N W 



6 43 



_ _ 



_ _ 



b 



fi 



.647 



.710 



.760 



.711 



56.4 



73.6 



58.5 



63.55 



.405 



.333 .304 



.329 



92 



41 



64 



61 



Calm 



N LW 



Calm 



3 Ml 



_ _ 



_ _ 



b 



7 



.S26 



.810 



.725 



.7S0 



55.9 



74.9 



59 .S 



65.00 



.368 



.424 .403 



.395 



84 



51 



80 



68 



Calm 



S S E 



S S W 



1.89 



0.055 



. .. 



b 



S 



.655 



.647 



.644 



.646 



62.9 



74.9 



62 5 



66.67 



.469 



.594 .394 



.4S6 



83 



71 



72 



76 



Calm 



S b W 



Calm 



2 37 



_ _ 



_ ^ 



c 



9 



.615 



.619 



.616 



.616 



63-2 



73.3 



64.8 



66.12 



.508 



.510, .420 



.47t 



90 



65 



71 



77 



Calm SWbVV 



SS W 



2 07 



„ _ 



_ 



d 



10 



.663 



.623 







59 5 



76.4 







.445 



.492 





89 



56 







Calm 



S 





2 53 



_ _ 



. 



b 



11 



.'685 



.701 



.746 



.716 



'5S.9 



72.7 



5S.6 



64 40 



.307 



.423 .303 



.347 



63 



54 



63 



59 



Calm 



SbE 



Nb W 



3 30 



_ _ 



_ . 



e 



12 



.302 



.807 



.814 



.812 



ISH.O 



71.4 



60.7 



63 10 



.323 



.458] .468 



.406 



74 



61 



90 



73 



N 



S E b S 



Calm 



3 .S3 



_ _ 



_ _ 





13 



.SS9 



.865 



.839 



.865 



56.4 



74.1 



54.7 



63.22 



.348 



.433, .345 



.379 



7S 



53 



82 



68 



NliE 



S S E 



SSE 



4.21 



_ . 



_ _ 



b 



14 



.777 



.693 



.58S 



.675 



58.1 



72.8 



65.8 



66 SO 



.346 .375 1 .490 



.440 



79 



47 



79 



69 



N E 



E 



Calm 



2 62 0.025 



. _ 



c 



lfi 



.473 



.297 



.373 



.369 



63.9 



69 6 



61 3 



66.40 



.520. .593 .505 



.549 



90 



84 



95 



87 



Calm 



S 



Calm 



4.27 0.4S0 



_ _ 



c 



Hi 



.383 



.499 



.585 



.499 



60.4 



600 



57.1 



59.20 



.439 .323; .367 



.361 



86 



63 



80 



74 



jsr w 



NNW 



NNW 



7 99 



„ _ 



_ 



c 



17 



.635 



.646 







50.6 



67.9 







.309 



.404 





85 



61 







NNW 



SbE 





4.55 



_ . 



. _ 



b 



IS 



.705 



.729 



.731 



.720 



'55.3 



65.3 



54.2 



5S93 



.366 



.443 .371 



.403 



86 



73 



90 



83 



N bE 



E 



Calm 



1 97 



_ _ 



_ _ 



a 



19 



.777 



.740 



.775 



.764 



'54.8 



74.8 



57.9 



61.85 



.329 



.485] .369 



.396 



78 



58 



79 



74 



Calm 



SE bS 



W bS 



4.12 



Innp 



_ _ 





20 



.787 



.719 



.706 



.732 



56.1 



77.1 



64.9 



67.13 



.357 



.461 .316 



.380 



81 



51 



53 



60 



N 



Sb VV 



N b \V 



4 66 



_ _ 



_ _ 





21 



.692 



.650 



.664 



.671 



HI .3 



78.7 



62 2 



69 23 



437 



.446! .347 



.43-- 



S3 



48 



63 



64 



N b W 



SSE 



S 



3 07 



_ _ 



_ _ 



c 



22 



.68S 



.643 



.601 



.641 



56.2 



S3. 1 



62.9 



69.27 



.336 



.303 .455 



.3Ss 



76 



28 



S2 



61 



S 



S EbS 



Calm 



2 16 



. _ 



. _ 



c 



23 



.613 



.562 



559 



.572 



56.4 



82 9 



65.2 



70.72 



.334 



.433 .438 



.448 



75 



40 



73 



64 



Calm 



SE bS 



Calm 



63 



_ _ 



. _ 



b 



24 



.583 



.532 







59.2 85.4 







.376 



.531 





78 



45 







Calm SE 1. S 





2.63 



080 



_ _ 



b 



25 



.331 



.342 



.470 



.390 



69 5 77.2 



60.7 



68.62 



.5S2 



.684 3S5 



.554 



84 



75 



75 



79 



S S E ISbW 



NNW 



7 96 



[nap 



. _ 



c 



26 



.598 



.633 



.677 



.638 



54.9 !68 1 



52 5 



53.57 



.326 



.366 .307 



.32* 



77 



54 



SO 



69 



N 1) E 



SbE 



Calm 



4.25 



_ _ 



. .. 



c 



27 



.687 



.673 



.694 



.685 



49.4 J76.5 



61.5 



64-80 



.206 



.4061 .445 



.364 



59 



46 



S3 



61 



SbE 



SE bS 



SbE 



3.7*1 



_ _ 



. . 



c 



28 



.737 



.761 



.791 



.769 



55.6 173.6 



61 1 



64.15 



.47S 



,553| .424 



.47^ 



R7 



69 



81 



79 



Calm 



S 



Cairn 



4 06 



_ _ 



. _ 



b 



29 



.825 



.76S 



.722 



769 



53.1 80.4 



64 2 



67.52 



.33o 



.504 -462 



.453 



85 



50 



79 



70 



8SW 



S E 



ENE 



3 16 



_ _ 



_ _ 



b 



30 



.70S 



.664 



.662 



.678 



63.2 !a0.4 



65.7 



71.20 



.391 



.531 



■392 



.46- 



70 



53 



64 



64 



Calm 



SbE 



Cairn 



1.75 



_ _ 



_ _ 



b 



31 



.686 



.670 







65 3 ISO 3 







.491 

 0401 



.644 







81 



64 







N 



SE bS 





214 



0.180 

 9.15 







M 



29 663 



29.645 



29.li.iS 



29.655 



58.77 



74 40 



60 96 



65.60 



0.450 0.402 



0.426 



81 



56 



77 



70 



Mi's 1 .62 Mi's 7 44 Mi's 2 07 3 -70 





Sum of the Atmospheric Current, in miles, resolved into the four Cardinal 



directions. 



North. West. South. East. 



1013.05 546.77 1063.57 76S.43 



Mean direction of the wind E. by S. 



Mean velpcity of the wind - - 3.70 miles per hour. 



Maximum velocity - - - - - 17 3 miles per hour, from 2 to 3 p.m. on 5lh. 



Most windy day ----- 1 6 1 h : Mean velocity, 7.99 miles per hour. 



Least windy day - - - - -23rd: Mean velocity, 0.63 ditto. 



Raining I2'7 hours. 



The column headed " Magnet" is an attempt to distinguish the character 

 of each day, as regards the frequency or extent of the fluctuations of the 

 Magnetic declination, indicated by the self-registering instruments at Toronto. 

 The classification is, to some extent, arbitrary, and may require future 

 modification, but has been found tolerably definite as iar as applied. It is as 

 follows : — 



(a) A marked absence of Magnetical disturbance. 



(/;) Unimportant movements, not to be called disturbance. 



(r) Marked disturbance — whether shewn by frequency or amount of 

 deviation from the normal curve — but of no great importance. . 



(d) A greater degree of disturbance — but not of long continuance, 



(e) Considerable disturbance — lasting more or less the whole day. 

 (/') A Magnetical disturbance of the first class. 



The day is reckoned from noon to noon. Ii two letters are placed, the first 

 applies to the earlier, the latter to the later part of the trace. Although the 

 Declination is particularly referred to, it rarely happens that the same terms 

 are not applicable to the changes of the Horizontal Force also. 



Highest Barometer - - 29 906, at S A.M., on 13th. ) Monthly range: 

 Lowest Barometer - - 29.274, at 4 P.M., on 15th. $ 0.632 inches. 



Highest regisl'd Temp. - 91 3, at — P.M., on 24ih ) Monlhlv range; 

 Lowest regisi'd Temp. - 41.6, at — A.M., on 27th \ 49.7 



Mean Maximum Temperature - - - - 77 02 > Mean daily range: 

 Mean Minimum Thermometer- - - - - 53 22 S ' 23.80 



Greatest daily range - - - - -30.7 from P.M. of 4th, to A.M. of 5lh. 

 Warmest day - - 4th - - - Mean Temperature - 72.67 ( Difference 

 Coldest day - - -2Glh - - - Mean Temperature - 58 57$ 14.10 



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

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



Possible to see Aurora on 25 nights. 

 Impossible to see Aurora on 6 nights. 

 Aurora actually observed on 6 nights. 

 Brilliant display of Aurora on 12th. 



Comparative Table for July. 







Tempei 



atnre. 







Rain. 



Snow. 

 Dy'slmh. 



Wind 



Year. 



Mean. 



Max. 

 obs'rvd 



Min. 

 obs'rvd 



Range. 



Mean 





D'ys 



iuehes. 



Velocity. 



• 



o 







o 



o 









Miles. 



1S40 



660 



79.4 



48.2 



31 2 



6 



5.270 



-- 



— 



1S41 



65.0 



86.3 



43.2 



43 1 



10 



S.I50 



-- 



-- 



1842 



64 7 



90.5 



42.0 



48 5 



4 



3.050 



- 



-- 



1843 



64 5 



86.1 



40.2 



45 9 



8 



4 605 



- 



0.44 lb 



1S44 



66.0 



86. 1 



40.5 



45.6 



12 



2815 



- 



0.19 



1S45 



66 2 



94.6 



45.6 



49.0 



7 



2.195 



-- 



0.30 



1846 



68.0 



94.0 



44 9 



49.1 



9 



2 895 



-- 



0.29 



1847 



6S.0 



87.5 



43 S 



43.7 



8 



3 355 



- 



019 



JS43 



65.5 



82.7 



46.7 



36.0 



10 



1 .890 



-- 



4 94 m 



1849 



6S.4 



89.1 



51.0 



38 1 



4 



3415 



- 



3 52 



1850 



68. 9 



84 9 



52.8 



32.1 



12 



5.270 



-- 



4.56 



1851 



65 



82.7 



52.1 



30 6 



12 



3 625 



- 



4 13 



1S52 



66 S 



90.1 



49.5 



40.6 



8 



4 025 



-- 



3 33 



1S53 



65.6 



So 4 



49.4 



36.0 



10 



0.915 



- 



3.70 



Mean 



66.33 



S7.10 



46.42 



40 68 



8.6 



3.677 







4 03 



This month may be considered the dryest that has ever been known for 

 the whole 1 3 years, the whole fall of rain not amounting to one inch, and 

 the number of hours during which it fell being only I2'7 : the mean 

 temperature of the month is 0°.7 below the average of the same num- 

 ber of years, but the march of the temperature has been tolerably 

 steady, a series of 4 cold days ocenring from 16th to 19th. 



A heavy storm occurred on the 15th, accompanied with violent dis- 

 charge of hail, westward of Toronto : an observer at Weston states 

 that "five per cent of the hailstones were as large as pullets' eggs, and 

 generally they were as large as cherries ;" the outline of sone of the 

 largest, 'of a quadrangular shape, measured 2}*C by 2 inches. 



Gold Testing. — The gold dust buyers of Southampton use an im- 

 mense magnet as one means of testing the purity of the gold. By 

 plunging this magnet into a heap of gold dust the freedom of the latter 

 from metalliferous admixture or otherwise is discovered by the quan- 



tity and degree of firmness with which the dust adheres to the magnet. 

 It is this test which detects the superior purity of Australian, as com- 

 pared with California!! gold. 



