156 J. H. Lefroy on the Aurora Borealis of 1850-1851. 
will soon be decided if the time of commencement of each dis- 
play is recorded, and a note also made of the latest hour at which 
it may have been noticed that there was no aurora. For exam- 
ple, the observer takes a look out at 7, p.m., no aurora, again at 
8, aurora, which is duly entered. In this connection the fact that 
here was no aurora at 7, is almost as important as the fact that 
the phenomenon was visible at 8, and should be duly entered. 
On 29th September, 1851, at 630, P. m., there was no trace 0 
aurora at Toronto; at 6°36, a brilliant heavy serpentine band occu- 
pied the northern sky. In this instance, and in various — 
the time of a appearance is fixed to five or six minutes, and 1 
any northern station it happens to have been fixed with any shi 
like the same exactness, the question will be answere 
In March, 1851, we have er of aurora every night save 
three, 13, 17 (full ‘moon, ) 19:3 e, however, were pretty gene- 
rally clear nights. Registers teenil 1851, have reached me 
rom a few stations only, but as far as they go, give evidence of 
aurora every night save four, 4, 14, 15 (full moon but clouded 
everywhere, ) and 21. The 161 h of December is the only in- 
e in the winter, of aurora seen in Canada, which escaped — 
notice at every northern station; the number seen at northern 
stations which do not descend to ‘unada 3 is of course considera- 
ble, as will appear from Table ty 
ig T—Shewing the number A —— 3 the Aurora i 1 at each station, in ae 
al, tae u hol: ism pa month in : which tere « evidence at presen 
t nomenon d somewhere or other on the American i 
Sig Pract idl a no doubt, int whended and pa a observat eens at pth omitted as 
confirmed, and included. in the totals at certain statio 
fish | z 3 
1850. tieleret se) Stet wie) os | eel eae 
Slelelele Slels| a} sl2lale 
a Peel’s River, : 6lnl pe 
a Fo ood Hope, ree i) cee RO 
a Fort Confidence, .......}...1. . 12} 9} 15 
aFk MERON cs io. ck 3.1.5 * | & #1. Be 
a ptagy ae icnaE étomb we hens fet 4 
a Lake Athaba 4 the. 3 Seer 19 
b Martin’s Falls, fs abe safeeshed feast 2f] 10} 10 10 11 
& Moose e Factory, sfeeelee-| Ta18 $19 12116} 11) 13 
6 Matawagomingen,...... Pec. gleonhidchatiast Sep Tp & 10 
6 Lake Nipegon, 5 | 6} Tt ; 
b Michipicoton, .......... 3/4/ 3/71 1)6) 5] 2) 19) 81-2) 2789 
c foundlar d, 116 611 313 S' 6.6 9 0 3| 52 
ce Quebec, \ 0/2} 8131 1} 86) °6el Gel Fel Be) 613] 
¢ Montreal, Ta, oe ee Ey Rea eg 
e Halifax, 1/4] 6/4] 8/6/13!10] 9/11} 8} 4) 7 
¢ Fredericton, jose loeeleecfeectec.f S| ate Pee tw 
e Kingston, ............. 0141118] 010] 6] shsy Bp a] 0) 8 
c “ae 3138! 3161 5/3} 58| 4] 5) 9| 8] 1100 
© ioraon. 0. WW... .. -.... 1|3/ 3/5! 310] 8] 2|.6| BI 0} 0, 
ae steht eee 6/7) 9[ 8/6! 8) 9/14/12] 7] 8 4) Br 
cy 11 28 ;23 (19 13 [21 |27) 95 | 21 ae 
—_— 
« From the 16th to 80th June. ‘b Observed by Sergeant Maiden, at Isle, near 
Quebec—none observed at Quebec. — eiadadiee a dere at Grete sas ale d Be 
ary Sad e From Ist to 18th, J Begins on the 30th, g Begins on on the 21st 
