ASTRONOMICAL AND METEOROLOGICAL WORKERS. 71 



rainfall (no details of rain) and evaporation are very fully 

 discussed. A very full account of his Observations on the 

 Diaphaneity of the Atmosphere as determined by himself from 

 observations on the direct effect of the sun on a thermometer 

 fully exposed or placed under white wool or black wool, is given, 

 He comes to the conclusion that the intensity of the suns rays is 

 greater in Tasmania than Avisti'alia (p. 212), then some interesting 

 experiments on radiation of heat are given, and upon dew and 

 the moisture in the atmosphere, etc. The essay covers 82 pages 

 out of 462 which make up the book. 



Captain J. C. Wickham. 



Captain J. C. Wickham kept a meteorological record at 

 Brisbane, from January 1st, 1843, to the end of 1846, and for 

 part of the time thermometer readings. These were published 

 with three years rainfall, 1840-41 and 1842, in the Moreton Bay 

 Courier for Janui-ry 23rd, 1847 ; the quantity of rain for each 

 month is given. Copies of the Courier, containing these observa- 

 tions are with Captain P. P. King's papers now in Sydney 

 Observatory. 



Rev. W. B. Clarke, M.A. 



It is not my intention to say anything of the life, work of the 

 late Rev. W. B. Clarke, of that I am not in a position to speak, 

 and it is moreover in abler hands ; but I cannot pass over the 

 very important contributions which came from his busy brain 

 and pen. Meteorology with him was but the amusement for 

 the leisure moments snatched from his favourite study, and from 

 the time he landed in the colony in 1839 until 1847 he kept a 

 cai'eful diary, and very frequently recorded his results in the 

 public press, and it is quite true to say that the number of these 

 contributions on this subject no man knows. Even his own 

 record in the sketch of his life published in the Sydney Mail, 

 July 13, 1872, he said was very incomplete, and I know that 

 several important papers are not mentioned. In 1842 upwards 

 of twenty-one papers on Meteorology were published in the 

 Sydney Morning Herald. 



1844. — On Paragreles or Hail Guards. 



1848. — On the Conditions of June and July, 1846 



1850. — Investigations of Hurricanes. 



1857. — Influence of Monsoons on the Climate of Sydney. 



1857. — Meteorological Observations during an Eclipse. 



1864. — On Australian Storms. 



1877. — Effects of Forests on Climate. 

 To our own Royal Society he read eighteen papers. 



In all there are twenty-nine papers on Meteorology, and I feel 

 sure there were many more, from what I have heard Mr. Clarke 

 say, and fi'om references to them, but I have no idea at what 



