1S53] 



SCIENTIFIC INTELLIGENCE. 



47 



spermatozoids perish only with a cold below 10° or 12°. The influ- 

 ence of temperature on the vitality of the spermatozoids of fishes, and 

 therefore on the fecundation of eggs, presents a reason for the instinct 

 which urges some fishes to ascend streams, and at times to penetrate 

 into rivulets where they have hardly water enough for their move- 

 ments. M. de Quatrefages deduces some rules which are important 

 to the art of pisciculture, bearing especially upon the preservation of 

 the spawn. 1. The water should not be supplied with the spawu in 

 advauce ; it is well to leave the spawn in place even till the moment of 

 employing it, and the fecundation should follow soon, upon the death 



of the male fish. 2. Since the fecundation should take place within a 

 day or twelve hours after the death of the animal, the spawn should 

 be then taken and kept separate. 3. To preserve the spawn, it should 

 not be placed in the water, or in the open air, but better in a moist 

 linen cloth, which is kept at a temperature equal to, or a little below 

 that, which for each species gives the maximum duration to the move- 

 ments of the spermatozoids. 4. If there are several fecundations to 

 operate successively, it is necessary to detach for each, the quantity of 

 spawn required, and leave the rest in some convenient place. — Corres- 

 pondence o/SUlhnan's Journal. 







Monthlj' Meteorological Kegister, a 



t the 



Provincial Magiietical 



Ob*ervatoi 



y, Toronto, Canada West. — Ausust, 1853. 









Latitude 43 deg. 39.4 mm. Nurth. Longitude, 79 dug. 21 mi.n. West. 



JSlevatwn 



above Lake Ontario : 108 feet. 



c 



r 



a 



Barom. al tem. of 32 deg. 



Temperature of the air. 



Tension of Vapour. 



Humidity of Air. 



Wind. 



i 

 [lain S'nw 



5 



6 a.m. 



2 P. M. 



10 p. ii. 



MEAN. 



6a.m. 



2p.m. 



10p.m. 



m'n. 



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



M'N 



DA.M.I 



2 p.m. 



10 p.m. 



m'n. 



6 A. M. 



2 P. M. 



10 P. M. M'N V 



[ncli. Inch. 



b 



1 



29.652 



29 607 



29.59S 



29.619 



o 

 65 6 



o 



6S.6 



o 



69.5 



o 



68.37 



| 1 

 0.545 0.636 600 



0.593 



88 



94 



86 



88 



W 



E NE 



N E 



Miles 

 1 27 



280 





b 



2 



624 



.617 



.5S8 



.605 



64 2 175.4 



61.7 



67.43 



.542 .589, .395 



.524 



93 



69 



74 



80 



N 



S SE 



Calm 









a 



3 



.551 



.505 



.447 



.491 



63.7 



73 1 



67.3 



6S52J 



.505, .587; .460 



.533 



88 



74 



71 



79 



Calm 



E NE 



E NE 



3 17 









4 



.419 



.417 



.450 



.426 



66.2 



/9 2 



65.0 



71.40. 



.539 .559 .496 



.531 



86 



58 



82 



72 



N bE 



S b YV 



NEbN 



4 37 









5 



.507 



.4S6 



.474 



.493 



bb.V 



^•2 



64.2 



72.32[ 



.477 .593, .485 



.516 



75 



57 



S3 



68 



N b E 



S 





1.07 









6 



.566 



.558 



.576 



.570 



65 6 



(9.3 



65.0 



70.62: 



.577 .707: .559 



.617 



94 



73 



93 



85 



Calm 



SE bE 



S 



2 73 









7 



.629 



.609 







67.1 



83.6 







.550; .608 





S6 



54 







S 



S b E 





3 77 



150 





c 



S 



.669 



.644 



.629 



.652 



64.7 



81.5 



700 



72.93 1 



.562 .635 .535 



.554 



94 



60 



75 



71 



Calm 



S bE 



NNE 



2 87 







b 



9 



.641 



.652 



.662 



.655 



64-7 



SO.O 



72.7 



73.02 



.486 .735 .662 



.650 



81 



74 



So 



82 



Calm 



SE bS 



S YVbS 



1 83 



Inap 





b 



10 



.699 



.657 



.677 



.674 



66.0 



88 4 



71.6 



76 98 



.596 .640 .631 



.630 



94 



50 



S4 



73 



Calm 



S 



Calm 



4 66 





c 



11 



.716 



.675 



.627 



.671 



68.1 



91.4 



75.6 



79.25' 



.549 .688 1 .685 



.647 



S3 



48 



SO 



69 



Calm 



S 



Calm 



4 73 









12 



.672 



.557 



.562 



.593 



71.7 



87.9 



77 4 



79.83 



.657' .862 .780 



.757 



87 



67 



85 



77 



Calm 



S 



N b YV 



4 34 



215 







13 



.564 



.460 



.444 



.486 



73 b 



90S 



72.0 



78.53 



.744 .874 .626 



.741 



94 



63 



82 



79 



Calm 



S E 



Calm 



3 06 



245 





b 



14 



.416 



.440 







71.0 



83 







.716 .752 





S3 



69 









N 





4.63 







b 



15 



.649 



.651 



.632 



.641 



66.8 



82.2 



69.6 



73.38 



.492 .576| .510 



.544 



76 



54 



72 



68 



NbE 



E bN 



Eb N 



4 48 



. . 







IK 



.651 



.623 



■57S 



.612 



63.6 



84.0 



71.1 



7.5.30 



.445 .540 .691 



.589 



73 



47 



94 



72 



N N E 



E S E 



NNE 



3 39 



_ _ 







17 



.546 



.415 



.354 



.427 



66.b 



Ho A 



67.1 



73.77 



.527 



.656 



.593 



.601 



S3 



55 



92 



76 



N N E 



S E bS 



JN bE 



3 83 



460 







IS 



.302 



.336 



.511 



.396 



b4.9 



b2.2 



oo.6 



59.77 



.536 



.447 



.294 



.403 



89 



82 



67 



76 



Calm 



NN YV 



N b YV 



7 41 



0.005 







19 



.576 



.573 



.586 



.582 



49.b 



67 9 



53. S 



57 32 



.265 



.204 



.253 



.245 



75 



31 



63 



56 



N b \V 



N YV 



Calm 



5.57 









20 



.626 



.566 



.525 



.571 



48.7 



707 



60.5 



60.97 



.256 



.367 



.352 



.323 



76 



50 



68 



62 



Calm 



S 



N YV 



5 28 









21 



.541 



.491 







47.6 



75.7 







243 



.511 







75 



60 







N b W 



S b YV 













23 



.675 



.739 



.799 



.751 



56.1 



72.9 



57.1 



62.93 



.351 



.482 



.354 



.403 



80 



61 



7S 



72 



N 



SE bS 



NNE 



4 98 







c 



2; 



.832 



.739 



.590 



.714 



61.4 



b8.0 



65.7 



65.22 



.408 



.402 



562 



.460 



77 



60 



92 



76 



3 E bE 



E 



N E 



6 56 



1 020 





b 



21 



.384 



.320 



.526 



.418 



67.7 



80.0 



61.4 



69.07 



.619 



.592 



.365 



.503 



94 



59 



68 



76 



S b E 



W N W 



NYVbYV 



7 55 



[nap 





c 



2. 



.681 



.739 



.750 



.732 



48 4 



65 7 



52 



06.60 



.237 



.401 



.332 



.32:1 



70 



66 



87 



73 



NWbWSE bS 



SE b E 



5 20 





d 



21 



.753 



.632 



.476 



607 



48.5 



70 7 



70.3 



65-92 



.246 



.505 



.588 



.479 



73 



69 



SO 



74 



NNE 



E 



S SE 



5 17 



0.200 





b 



2 



.442 



.534 



.719 



.588 



64.4 



62.2 



55 6 



60.50 



.549 



.322 



•310 



.382 



94 



59 



71 



73 



W 



\V 



WbN 



9.50 







L 



2t 



.850 



.827 







50.6 [66.4 







.291 



.440 







81 



7(1 







N YV 



S 





3 48 







b 



2i 



.800 



.725 



.722 



.743 



49 4 



71.6 



60.0 



61.25 



.297 



.395 



•366 



.373 



85 



53 



71 



69 



Calm 



Sh W 



Calm 



2.5S 



Inap 

 [nap 



2 575 





b 



:t 



.670 



.568 



.508 



.569 



0/.5 



70 5 



70 4 



65 80 



.301 



.433 



.440 



.42; 



65 



60 



60 



68 



Calm 



S ' V b S 





2 04 





a 



3 



.621 



.633 



.710 



.661 



64 3 



70S 



61.8 

 65.33 



65.42 

 68 61 



.492 

 474 



.553 



.466 



.48b 



S4 



69 



S7 



81 



NbE 



E SE 



S E bE 



3.33 



4 23 







29 611 



!29 579 



29.5SS 



!29.591 



:>2.19 76 39 



0.5530.496 



0.513 



84 



62 



78 



74 



Mi's 2.52 Mi's 7 63 Mi's 2 S3 



- ■ 



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



directions. 



North. West. South. East. 



972.76 74(5.25 1212.66 879.16 



Mean direciion of the wind S. E. by S. 



Mean velocity of the wind - - 4 23 miles per hour. 



Maximum velocity - - - - - 185 miles per hour, from 4 lo5 p.m. on lSlh 

 Most windy day ----- 27, h: Mean velocity, 9.50 miles per hour. 

 Least windy day ----- 5th Mean velocity, 1.07 ditto. 

 Raining 19 3 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 far as applied. It is as 

 follows: — 



(a) A marked absence of Magiietical disturbance. 



(b) Unimportant movements, not to be called disturbance. 



(c) Marked disturbance — wnelher shewn by frequency or amount of 

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



(r/) A greater degree of disturbance — but not of long continuance. 



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



(/") A Magiietical disturbance of the first class. 



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

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

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

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

 Highest Barometer - - 29 850, at 6 A.M. a on 28lh. ( Monthly range: 

 Lowest Barometer - - 29 300, at S A.M., on 1-Sih. S 0.550 inches. 

 Highest regist'd Temp. - 94.9, at — P.M., on 11 in j Monthly range; 

 Lowest regist'd Temp. - 42 5, at — A.M., un 25th S 52.4 



Mean Maximum Temperature - - - - 78 50 ) Mean daily range: 



Possible to see Aurora on 23 nights. 

 Aurora seen on 3 nights. 



Comparative 'fable dor August, 







Tempei 



alure. 







Rain. 



Snow. 



Wind 



Year. 



Mean. 



Max. 

 obs'rvd 



Mill, 

 obs'rvd 



Range. 



Mean 





D'ys 



Inches. 



Dy'slnch. 



Velocity 





o 







o 



o 









Miles. 



1840 



64.6 



180.1 



47.4 



32 7 



12 



2 905 



-- 



— 



1S41 



644 



83.5 



46.7 



363 



9 



6 170 



-- 



-- 



1S42 



657 



80.7 



45.3 



35 4 



6 



2 500 



- 



-- 



1813 



66.4 



S5 5 



444 



41 1 



4 



4350 



- 



0.12 lb 



1344 



643 



82 5 



44.3 



33 2 



17 



imperfect 



- 



16 



1S45 



67.9 



32 5 



44.4 



38 1 



9 



1 725 



- 



0.19 



1S46 



6S.4 



S6.3 



50.4 



35 9 



9 



1.770 



-- 



0.17 



1847 



65.1 



83.1 



44.9 



38.2 



10 



2 140 



- 



0.19 



1843 



69 2 



S7.5 



49.3 



38.2 



8 



355 



-- 



4 55 



1849 



66.3 



79.5 



51.4 



28.1 



10 



4.970 



- 



3 76 



1850 



66.8 



S4.2 



43.0 



41.2 



13 



4 355 



- 



4 46 



1S51 



63.6 



79 S 



43 6 



36 2 



10 



1.360 



- 



4 62 



1S52 



65.9 



81.2 



46 7 



34 5 



9 



2 695 



- 



3 30 



1353 



68.6 



91.6 



47 6 



44.0 



11 



2.575 



- 



4 23 m 



Mean 



66 23 



83.43 



46.39 



37 04 



9.8 



2 990 







4.I5M'S 



Mi-aii Minimum Thermometer- - - - - 57 10 



>M< 



21.41 



Greatest daily range 39.1 from P. M. '24th to A. M. of 25th. 



Warmest day - - 12th - - - Mean Temperature - 79.83 / Difference 

 Coldest day - - -25th - - - Mean Temperature - 56 65 \ 23.18 



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

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



The mean lemperaiure 

 and is with one exception 

 mometer recorded 94.9 on 

 curred at the Observatory, 

 following this, which was 

 inclusive, the differences a 

 13 5, 12 3,— 7,— 2,9.3, 7.S 

 maindcr of the month bein 



The blanks in the Mas 

 graphic traces from the us 

 being exhausted and some 

 from England. 



of the month is 2.4 above the average of 14 years, 

 (1848) the highest known: the maximum ther- 

 ihe 11th, which is the highest that has ever oc- 

 bul the warmest day on the whole was the day 

 13.5 above the normal. From the 9th to the 17(h 

 bove the normal were as follows: Go, 10.5, 12.8, 

 ; these were succeeded by three cold days, the re- 



of an average character, 

 netic column arise from the failure of the Plmto- 

 of improper paper, the slock of proper paper 

 delay having occurred in the arrival of a supply 



