BY THE REV. W. B. CLARKE, M.A., F.G.S., &c., V.P. 175 



When my late friend Mr. Kennedy was exploring the Barcoo 

 and desert country about it and the "Warrego, I carried on at St. 

 Leonard's simultaneous observations, as I did when he was in 

 York Peninsula. On the former occasion there was the most 

 marked agreement with my own observations and those made by 

 Mr. Kennedy. Eight hundred miles to the N.W. especially on 

 2 8th-3 1st August, 1847 Kennedy had strong E. andKE. winds 

 on the desert of the Barcoo ; whilst on the 26-27-28th, a heavy gale 

 was blowing along the coast of Tasmania, and strong N.E. to N. 

 winds blew at Sydney. The winds shifted from N.E. to S. in the 

 latter part of September, 1847, both at Brisbane and on the Barcoo. 



Again on 13th October, squalls and thunderstorms occurred 

 simultaneously at Sydney and on the lower part of the Barcoo. 



Such coincidences as these are, however, not always due to 

 progressing gales. I suspect, from having made hundreds of 

 similar observations, that separate storms often occur simultane- 

 ously, or nearly so, over wide regions, as if the moving causes 

 were some kinds of electric shock propagated from a distance and 

 successively charging (at minute intervals) areas of atmosphere 

 in a similar condition. If Admiral Fitz Roy's dictum is true, that 

 one storm cannot maintain itself for more than four days, it is 

 impossible to account for the facts often observed of weeks of 

 stormy weather without coming to some such conclusion as I 

 long ago adopted, and which I am glad to see strengthened by 

 Admiral Fitz Roy's opinion. 



During thundery weather, I have frequently noticed the fact 

 that thunderstorms are simultaneous, or nearly so, at Bathurst 

 and Sydney ; and if these storms be so propagated or 

 connected, why not other kinds of storms, such as gales of wind 

 and cyclones ? 



I will not now dwell further on this, but state distinctly that 

 in my humble opinion Mr. Tebbutt rightly infers, not alone from 

 the storms of 1861 cited by him, that such storms are occasioned 

 by two currents. 



I state unreservedly, and I can show it by phenomena of storms 

 noted down, as in the example I now produce, that there are 

 always two winds at work in all great derangements of the 

 atmosphere in Australia. 



