Vol. 57.] ANNIVERSARY ADDRESS OF THE PRESIDENT. Ivil 



Sir John Evans, indicating to future explorers that the ground had 

 heen disturbed. 



General Pitt-Eivers held the office of Government Inspector of 

 Ancient Monuments under the Act of 1882. He was elected a 

 Fellow of this Society in 1867, and of the Royal Society in 1876. 

 After many years of declining health, he died at his seat, at 

 Rushmore, near Salisbury, on May 4th, 1900. [F. W. R.] 



Robert Russell, born on May 24th, 1842, was educated as a 

 •civil engineer, and joined the staff of the Geological Survey in 

 1867. For some years he was occupied, under the late Prof. A. 

 H. Green, in the survey of the Yorkshire Coalfield, and afterwards 

 an the Whitehaven Coalfield. He died at St. Bees on May 9th, 

 1900, aged 58. 



Walter Percy Sladen died on June 11th, 1900, at the com- 

 paratively early age of 51. He was born near Halifax (Yorkshire) 

 in 1849, and was educated at Marlborough, under Dean Bradley. 

 Apparently without any regular scientific training, his innate love 

 of zoology led him to acquire a wide knowledge of this and 

 collateral sciences. His earliest paper was published in 1877, and 

 for the next 17 years he devoted himself to the study of the 

 Echinoderma, and more especially to the Starfishes. Much of his 

 work was done in conjunction with his friend Martin Duncan. 

 Although his labours were chiefly among the living forms, his 

 intimate acquaintance with these gave him the greater power to 

 deal with the fossils which came under his notice. The outcome 

 of his work was published in the Proceedings of the Royal Society ; 

 in the ' Annals & Magazine of Natural History ' ; in the Journal 

 of the Linnean Society ; and in our own Journal ; but his great 

 work was doubtless the magnificent volume, of 900 pages and 

 118 plates, in which he described the Asteroids of the Challenger 

 Expedition. His work among the fossil Echinoderma was of no 

 mean order, as shown by the memoir, produced in collaboration 

 with Martin Duncan, on the collections of the Geological Survey of 

 India, and also his continuation of Thomas Wright's Memoir on the 

 Cretaceous Asteroids, published by the Palaeontographical Society 

 in the volumes for 1890 and 1893. 



Mr. Sladen was for many years Secretary of the British Asso- 

 ciation Table at the Naples Biological Station ; for 10 years he was 

 Secretary of the Linnean Society, and afterwards Vice-President. 



