Meltorological Observations ai Great Yarmouth. 151 



nacitv of 4 to 5 cubic inches, a tube is soldered whicli at first 

 is horizontal when the flask is upright, then descends vertically, 

 and is terminated by a joint of copper fitted with a cock. 1 his 

 flask or this vial, {phiole) as the author calls it, is hermeti- 

 cailv closed by a stopper whose axis is traversed by a platina 

 wire terminating in a porous ball of clay and ot platma sponge 

 2 to 4 lines in diameter. It is in this part of the apparatus 

 that the combustion of the hydrogen takes place. A vacuum 

 is at first produced, then the tin piece is screwed o" a simi- 

 lar piece at the top of a graduated jar containing 60, 90, or 

 150 cubic inches, into which the mixture ot two volumes ot 

 hydrogen and one of oxygen has been made to P^^^- /^^ 

 cock of the iar is first opened, not to be touched again till the 

 end of the Operation; then the upper cock, which is almost as 

 soon shut: the part of the gaseous mixture which has passed 

 nto the flask enters directly into combustion ; the water 

 trickles along the sides, the platina becomes incandescent, and 

 the vacuum is formed anew. The metal bemg sufticiently 

 cooled a new quantity of hydrogen and oxygen is introduced, 

 -ind so on To prevent all dan|er of the graduated jar being 

 broken Z the current of gas becoming inflamed it is only 

 ecessar/to place a ball of'the same capacity as the flask be- 

 tween the two parts of the apparatus, and never to establish 

 [he^ommunication excepting success vely from one recipient 

 to the other.— Bullet i7i de s Sciences, No. 12. 



Meteorological Obsei-vations at Great Yarmouth, hy 

 C. G. Harley, Esq. 



[Continued from vol. Ixiv. p. 317-] 



jj Winds. Thennom. Rain. 



rr^ — ^„, V SF S^^W" W. NW.N. NK.Low. High.Med. In. 



•^1"- ^"^ f. ~ \ I \ 5 5 2 41 65 54 5 

 *'^'- "^r Z ~ \ \ <k 5 5 1 40 58 49 3| 

 S::-: 16 W - J_l^__^4_0_.^_^36_ 53 J4_^._ 



"If^iiTii^^^nip^'-e of the last year is 53-r\ 



The mean temperature for 30 years is 5Z.g 



Ouantitv of water for the last year is • ^^t 



being the largest quantity for tlie last 2+ years. 1 he 

 yet 1812 approaches the nearest to .t, the quan-^^^^ 



titv being then . . . • h 



The meanVntity of water tor 2i years IS ... 25* 



