239 



SCIENTIFIC INTELLIGENCE. 



[1853 



at the gold diggings, Mr. Calvert has himself been engaged for eight 

 years iu tracing the auriferous veins and in procuring gold A short 

 time ago he sent liome a block of quartz weighing a ton and a half, 

 and he has brought home with him in the Falcon 730 nuggets of the 

 precious metal. One of the pieces weighs 2.31bs. of pure gold, and we 

 had the opportunity of seeing a peice weighing li^lb., which is con- 

 sidered one of tlie best specimens, being, in the state iu which it was 

 discovered, above tiie standai'd. The amount of gold brought home 

 by Mr. Calvert is about 330 lbs. gross, between 7'i lb. and 80 lb. being 

 dross or quartz more or less rai.'ced with the gold. The largest quan- 

 tity he ever obtained in one day was 7G lb. weight. He had been led 

 to the spot by auriferous indications, increasing as he came nearer, for 

 a distance of nearly 40 miles. The quartz vein ran north and south, 

 and was from about 9 to 15 feet in breadth, half a mile from where he 



robbed it of its precious treasure. It stands out in large blocts of from 

 15 to 20 feet in heiglit, looking in the distance like white houses. This 

 place is dist.ant from Sydney about 215 miles, and a long way from 

 any at present worked gold-field. During the latter part of his resi- 

 dence in Au-stralia Mr. Calvert had a camp and three men as assistants, 

 and, properly equipped, he pursued his scientific survey. Among his 

 discoveries, he found diamonds, rubies, and many valuable minerals, 

 in which the Australian colonies abound. We understand that Mr, 

 Calvert will proceed direct to London, where he intends to get his 

 drawings and maps transferred to canvass, for the purpose of exhibit- 

 ing them as a panorama of the goldfields, illusti'ative of lectures which 

 he intends to deliver on the origin of gold, and on the colonies towards 

 which so many thousands of his fellow-countrymen aie now turning 

 their atteution. — Liverpool Mercury. 



Monthly Meteorological Register, at Her Majesty's Magnetical Observatory, Toronto, Canada West. — .<Vpril, 1833> 



Lnfltifde 43 *(7. 39.4 mm. Niirlh. Lo7,ijilii(k, 79 drr/. 21 min. Went. J?/evn/!on nhorc Lake Ontario : inS pH. 



Sum oj the Atmospheric Curreitt. :.n mites, resolved into the four Cardinal 

 directions. 

 North. West. Soulh. East. 



1964.83 1172.87 62182 895.06 



Moan velocily of llie wind - - 5.20 miles per hour. 

 Maxiiimm velocity - - - - - 21.2 jnl's per h'r, horn 1 to2 p.m. on 8ih. 

 Most wmdy day .... - 8lh : Mean veloi-lly, 10.71 luile.s per hour. 

 Least Windy day . . - . - 12ih: Mean velocity, 29 dillo. 



The toliimn headed " Magnet" is an attempt to fli.stin^nii.'ili the uharacter 

 of eaeh day, as regards the Ireqneiu-y or exienl of the ibiciualiuns of the 

 Mau-neiic deelinatiun, indicated by lhesell'-rei;isleringin..^iriinienis al Toronto. 

 The flas.-itii-aiion is, to some exieni, arbitrary, and may require hiinre 

 modiliralion, but has been (ound toletably dehniie as lar as applied. It is as 

 (ollow.s:— 



(ff) A marked absence ofMagnetical ilistuibnnce. 



(ij Uniinporlunt inovemenls, not ti> be called disturbance. 



(r) Marked di.<iurbance— wnelliir shewn liy fieqiicncy or amount of 

 deviaiion trom the norma! curve — lint of no great iinptiriance. 



(r/) A greater decr.e ordisiiiibance— but mil of long cunimnance. 



(a) Considerable dislinlianee — lasiing nuire or less die whule day. 



(/■) A Magnetical diMurimnie ol the first ela.ss. 



The day is reckoned (roni noon to noon. II two letters are placed, the first 

 applies 10' the earlier, the latter to ihe later pan o( ihe trace. Although the 

 Dei^iiiaiion is parlicniaily reltfrred 10, ii rarelv hapjiens that the same lernis 

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

 Hiiihe.sl Barometer - - 29 974, at 8 A. M., on I50i J Monthly range: 

 hi.wesi Baroincier - - Hi 985, al 2 P.M., on 22 id < 989 indies. 

 Highest ob.serv.d Temp. - 65 7, at 2 P. M., on2Sih } Monlhly range: 

 Lowest regisi'd Temp. - 25 0, at A.M., on 1 lih < 40.7 



Mean Highest observed Temperature - - 47 68 J Mean daily range: 

 Mean Thermometer Minimum - - - - - 33.61 > 14.07 



Greatest daily range - - - - -29 S fiom 4 P.M on 22nd, to A.M. of 23rd. 



Wannest day - - 28ih - - - Mean Temperature - .57 05 ( DiHerenee : 

 Coldest day - - - 14lh - - - Mean Temperature - 33 37 J 23.6S 



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

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



April 5ih— Fioi;s Hr-t heard. 



Fine displays o( Aurora on the 6lh and 29ih. Lunar Halo on 15ih. 



An Eanliqiiake issmied, on good authority, 10 have ben felt at Toronto, 

 abiiui 5 A.iM., oa the 2Sih. Seven distinct shocks were perceived. Any 

 persiin who noiiced this will please commiinicale it to the Observatory. 



Possible to see Aurora on 12 nighis. Aiiroia actually seen on 7 nights. 



Comparative Table for April. 



