"^ 



"? 



'i 



I 



*-'^ 





.-^ 



01 Q 



METEOROLOGY. 



[Sect. IX. 



tremely rare phenomenon 



f 



pale blue colour^ so little luminons as to allow of bemo" 

 gazed at with impunity* — occur, the atmospheric circum- 

 stances sliould be carefuUv recorded. 



The polarization of the light of the sky should be ex- 

 amined habitually with a polariscope, and the relation of 

 the points of maximum polarization to the suUj and the 

 ob 



fc-^^\-^ 



m various 



, er's zenith, noticed in every variety of climate, and 



ing apparently 



of 



the sky, and 



abnormal recorded. 



Zocl 



Mai light. — In the seasons of its appearance take 

 every opportunity in tropical climates to ascertain with 



« • 



preci SI 



on th 



e place of its apex among the stars, its breadth 



and degree of brightness, and %vhether variable or not. 



Meteors. 



1, Astronomy— Appendix. 



APPENDIX. 



Table I,~Correction to be added to Baroci " rs for Capillary Action. 



! Diameter of Tabe 



t 



U 



Correction for 



i 



Unboiled Tuoes. ! "l Boiled Tubes. 



Inch. 



0-60 



• 50 



1 



Inch. 



0*004 



0-007 







n 









 

 







« 



010 



ou 



020 

 028 

 040 

 060 



088 



0O42 



Inch. 



0-002 



• 003 

 0-005 



0-007 

 0-010 

 0-014 

 0*020 

 0-029 

 0-044 

 0*070 



* It occurred at Bermuda on the i2tli and ISdi of August, 1831, two 



days after the great Barnadocs hurricane of that year. 



ipP--1 





I 





 I 



2 



3 



4 

 5 

 C 

 7 



9 



10 



11 



12 



13 



16 

 17 

 18 

 19 

 20 



22 

 23 

 24 

 25 



27 



28 



29 

 30 



31 

 32 



33 



I V 



■C 





 

 



•0 





 



1 « 







I'O 

 ^•0 



ro; 



I'O: 

 •0; 



•0' 



-0; 



•0: 

 •0; 

 •0; 



t 



rO 



'0 



^ . 



-0 



•0 

 •0 

 •0' 



•Oi 

 !'0 



34 ho: 



35 

 36 

 37 



■0. 



'o: 



n. c 



38 i.Q* 

 40 



41 



42 

 43 



44 

 45 



46 



47 



48 

 49 



50 



I'O; 

 !'0; 



1 ^A< 





"■a 



j'O^ 



'0^ 



*0. 



I 



I 



^ J 



