Proceedings of the British Association. 545 



fossil trees on the Bolton line on Mondays and Wednesdays ; 

 and as it would be impossible for all to visit the various 

 manufactories of Manchester at once, it was announced that 

 Dr. Fleming would distribute a limited number of tickets. 

 The accounts being next read, the meeting then adjourned. 

 At the Mathematical section which met the following day, 

 Sir David Brewster noticed the erection of one of Mr. 

 Ostler's anemometers at Inverness, one of the stations at 

 which hourly observations on the barometer and thermo- 

 meter have been kept at the expense of the Association. 

 Sir David also stated a few of the results which have 

 attended these observations. Professor Phillips noticed the 

 remarkable curves which the hourly observations on the 

 barometer indicate, and pointed out the interest attach- 

 ed to hourly observations in connection with formulae of 

 barometric oscillations in different latitudes. The President, 

 (the Dean of Ely,) considered meteorological observations 

 as formerly kept of very little use, and thought that the 

 hourly observations might lead to a discovery of the general 

 laws connected with the intricate phenomena of electricity. 



The further proceedings of the meeting of this section 

 we now subjoin as reported in the Athenceum of July 3, 

 1842, p. 587-8. The reduction of the stars in the Histoire 

 Celeste of M. de Lacaille therein referred to, as well as the 

 abstract of Professor Liebig's report on organic Chemistry 

 in the chemical section, which we also subjoin, are perhaps 

 the subjects of most attraction in the present reports. 



Mr. Scott Russell presented a ' Report on the Abnormal Tides of 

 the Firth of Forth,' supplemental to a former Report on the same sub- 

 ject (Athen. No. 675.) — Be had on a former occasion presented to the 

 section the result of tidal observations on the Firth of Forth. These 

 observations brought to light the existence of certain very remarkable 

 tidal phenomena, proving the occurrence, on some parts of that Firth, 

 of double tides, or rather perhaps of quadruple tides, being four high 

 waters in each day, instead of only two, as usual. When this subject 



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