xx Proceedings, &c. 



The next table showed the amounts of ozone (by Schonbein's ozo- 

 nometer) registered at Flemington (about three miles north-west from 

 Melbourne, and at an altitude of about 100 feet), and the approxi- 

 mate mean temperature of the months, in 1857. 



1857. 



Day.* 



Night.* 



Mean Temperature. 



April 



4-0 . 



.. 5-0 



62-2 



May 



5-1 . 



.. 6-0 



52-3 



June 



6-7 . 



.. 7-9 



49-7 



July 



5-5 . 



.. 6-6 



49-4 



August 



5-9 . 



.. 6-5 



51-5 



September 



6-1 . 



.. 7-2 



53-2 



October 



6-4 . 



.. 7-3 



57-1 



November 



3-8 . 



.. 5-5 



60-4 



December 



2-6 . 



.. 4-1 



68-7 



Mr. Smyth pointed out the necessity of obtaining the ozone test 

 papers from well-known makers, guaranteed, if possible by the in- 

 inventors, and discountenanced the proposal for each observer to pre- 

 pare his own, as likely to lead to results differing in consequence of 

 the degree of saturation of the papers, the quality of the paper, &c. 



In conclusion, he said, " The evidence at present before us seems to 

 indicate, (1.) That in all seasons there is much more ozone during the 

 night than during the day. (2.) That there is much more ozone du- 

 ring the winter than during the summer, or, more correctly, more 

 ozone in the colder, than in the warmer months. (3.) At Melbourne, 

 the westerly and south-westerly winds appear to be generally highly 

 charged with ozone, and the northerly and north-easterly winds de- 

 ficient. (4.) All the evidence goes to show that there is much more 

 ozone at the stations in the interior (at considerable elevations) than 

 at Melbourne, but until observations shall have been made on the 

 sea-coast, at some distance from the disturbing influences of a large 

 city, it cannot be said with certainty that the interior is in excess of 

 the coast. (5.) Nothing really valuable can be known respecting 

 ozone until we have the results of observations at some well-selected 

 stations in the tropics, and at some very northerly or some very 

 southerly points (within the artic or antartic zones.) Does the amount 

 of ozone increase on approaching the artic or antartic circles % Does it 

 decrease and become almost inappreciable in the tropics % These are 

 the questions that require solution." 



His Excellency asked some question respecting the effects of tem- 

 perature on the action of the ozonometer ; and the President, and 

 some of the members expressed their interest in the investigation. 



Dr. Mueller exhibited specimens of, and described, some rare bo- 

 tanical plants. [Vide " Transactions."] 



After a short discussion on these communications, the Institute 

 separated. 



" * From 8 a.m. until 8 p.m., and from 8 p.m. until 8. a.m. 



