228 report — 1877. 



Enclosure referred to in Mr. Lyster's letter, July 30th, 1874. 



Levels of Tides at Liverpool. 



Derived from the Record of the Self-registering Gauge at St. George's Pier, 

 deduced from ten years' observations, 1854 to 1863. 



Datum, Old Dock sill. 



An extraordinary high tide as marked on the Leasowe 

 Lighthouse 



An extraordinary high tide, 20th January, 1863 



Average high-water mark of eqivinoctial spring-tides .... 



Average high water of spring tides, including equinoctial 

 tides 



Average high-water mark of ordinary spring tides, excluding 

 the equinoctial tides 



Mean high-water level 



Highest high-water mark of neap tides 



Average high-water mark of ordinary neap tides 



Lowest high- water mark of neap tides 



Mean-tide level {Ordnance Datum) 



Highest low-water mark of neap tides 



Average low-water mark of ordinary neap tides 



Lowest low-water mark of neap tides 



Mean low- water level 



Average low- water mark of ordinary spring tides, exclusive 

 of equinoctial tides . . 



Average low-water mark of spring tides, inclusive of equi- 

 noctial tides 



Lowest low-water mark of equinoctial spring tides 



ft. in. 



25 

 23 9 

 21 1 



19 0| 



18 10 

 15 6 

 14 8 



11 7 

 8 7 

 5 



4 1 

 1 5 

 3 10 



5 61 



8 8 



8 10 

 10 4 



> 



a 4 



o 

 < 



o 



§ 



i 



> 



in 



o 



4 



p 



Report of the Committee, consisting of Prof. Huxley, Dr. Carpenter, 

 Mr. Sclater, Mr. F. M. Balfour, Dr. M. Foster, Prof. E. Ray 

 Lankester, and Mr. Dew-Smith, appointed for the purpose of 

 arranging with Dr. Dohrn for the occupation of a Table at the 

 Zoological Station at Naples. 



The duty of your Committee seems not so much to report on the Zoolo- 

 gical Station itself, which is now fully established and equipped, as to select 

 fitting naturalists to proceed to Naples, and to occupy the Table engaged for 

 the British Association. 



Since the last report was made, three naturalists have occupied this Table, 

 viz. Dr. "W. B. Carpenter, F.R.S., Mr. Francis M. Balfour, and Mr. Arthur 

 W. Waters. 



These gentlemen are required by the Association to report the result of 

 their work there. These reports will be found appended. We may say 

 that the Institution is now thoroughly well established and is daily becoming 

 an Institution of world-wide reputation. 



I 



