262 



SCIENTIFIC INTELLIGENCE. 



[1853 



two parhelia or mock suns ; these ^ere in their usual places in two 

 intersections of the halo ; in each pailiclion tlie colours were prismatic. 

 Higher in the heaveus, toucliiug tlie lialu, was an arch of an i-ry-erted 

 rainbow ; and still higher, with the prismatic colours much more virid, 

 was another inverted arch. Tliese two inverted arcs were as distinct 

 in colours as thecommou rainbow, but not of the same breadth. There 

 were various other circles not well defined. Verging toward.s the 

 North was a third parhelion, not consisting of prismatic colours, and in 

 which we could not trace the intersecting circles distinctly. The 

 clouds in the North were at the same time tinged with red. The par- 

 heUa lasted more than an hour." 



JExIraordivauj Lenglhof Wire from one Piece of Metal. — Arem.arkaWe 

 specimen of the ductilitj- of copper was manufactured last week at Mr. 

 Walker's miUs, Fazeley-street. The metal referred to weighed about 

 123 lbs., which was drawn out to a length of upwards of four miles, 

 and is to be laid down as a line of telegraph without liuk or weld. 



A method has lately been introduced in Prussia of printing books 

 on linen prepared for the purpose. It is the invention of an apothecary 

 named Sanger, of Berlin, and is found very admirable in large schools 

 for the poor. The appeai'ance of the book is by no means injured, and 

 the price is the same as if printed on paper. 



) Die four Cardinal 



East. 

 1101.65 



Sum. oj the Atmospheric Current, rn miles, resolved 

 directions. 

 North. West. South. 



1489.22 1331,98 840.17 



Mean velocilv of the wind - - 5.14 miles per hour 



Maximum veloc.ly 21 „,l's per h'r, lVom2 lo3 p.m. on 30lh. 



Most wmdy day 19ih: Mean veluciiv, 10,77 mile,- per hour. 



Least windy day 3rd: Mean velocity, 0,33 .lilio. 



The column headed " Magnet" is an allempt to disiin^'ui.-ili the character 

 oil each day, as regards the Ireqiiency or extent of the iliicliiations of the 

 Magneiic declination, indicated by Ihe.^elf-registering in.^riimenls at Toronto, 

 ihe clas-sificalion is, to some extent, arbnrarv, and may require fulnre 

 modification, but has been (ound tolerably de/iniie as lar as applied. It is as 

 rolktws : — 



(ri) A marked absence of Magnetical disturbance. 



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



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

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



(rl) A greater degree of disliirbanee — but not of long continuance. 



(e) Considerable disturbance- lasiing more or less tlie whole day 



(/) A Magnetical disturbance of the first class. 



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

 applies 10 the earlier, the latter to the later part of the trace. Allhou-di the 

 Ueelmaiion IS partieulady referred In, i, rarely happens that the same°terms 

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

 Highest Barometer - - 30,074, at 6 A. M., on 1st. ? Monthly ranee- 

 Lowest Baromeiei- - - 29,21.3, at 2 P.M., on 8ih. 861 inches 

 Highest observed Temp.- 78,4, at 12 1 P.M., on 2Sai ) Monthly range ■ 

 Lowcslrcgrsi'd iemp. - 32.2, at A.M., on I3ih ( 46'.2 



Jean ll.ghcM observed Temperalure - - .56.74 j Mean daily range : 



JVlean Iherniomeler Minimum 42 55 < 1419 



Gieateal daily range 2S.4 from noon of 2Slh, to A.M. or29ih. 



Warmest day - -28th - - - Mean Temperature - 65 07 ( Diflirenee : 

 Coldest day - - - 19lh - - - Mean Temperauire - 41 23 i 23.S4 



The *' l\'ieans" are derived from si.\ observations daily, viz., at 6 and 8 

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



Aiiiura ub,-erved on 8 iiishl.-i. Possible to see Aurora on 19 nights. 



Halo round the .Mm at 5 30 P.M., on ihe llih 



PeilLi 1 D.uhle Rainbow at 7.25 P,M,, on Ihe 25ih. Brilhani co'ours. 



The depth ol ram (or this ni'inih is much above the average, and has been 

 exceeded only in two year^, 1844-49 ; but the number ol rainy days is ihe 

 greaiesi thai has been known throughout the whole series of years, being 

 or.ly equalled m .Augusi, 1844. 



Comparative Table for May. 



