100 Sir Thomas Brisbane's Table of Tides, Spc. 



gates with every difference of level, and, in this respect, the 

 inventor of the fan-gate sluices has certainly conferred a great 

 benefit on his country. 



A successful practice, of more than twelve years, has con- 

 firmed the expectations anticipated from this invention. A 

 great number of fan-gates have been constructed, and many 

 more are now building. 



Utkecht, 6th September 1824. 



Art. XIX. — Table of the Rise of the Tide at Hobart Tozvn, 

 Van Diemen's Land, in April and May 1 822, and January 

 1823. Communicated by his Excellency Sir Thomas 

 Brisbane, K. C. B. F. R. S. L. & E. &c. 



