part 1] ANNIVERSARY ADDRESS OF THE PRESIDENT. lxi 



less embodv a large amount of careful work. Green was long a 

 member of the Geologists* Association, and had many friends 

 among London geologists. He died in his 83rd year on May 31st, 

 1917. 



Charles Otto Trechmann, who died on June 29th, 1917, 

 aged 66, was the author of numerous mineralogical papers. On 

 geology he wrote little, though interested in its petrological 

 side and a Fellow of this Society since 1882. It was he Avho 

 showed that the so-called ' hypersthenite ' of Carroek Fell is more 

 truly a gabbro. 



Alfred Nicholson Leeds belonged to a type of amateur to 

 which Geology has owed much. Born at Eyebury, near Peter- 

 borough, where he spent his life, he devoted much of his leisure 

 during nearly fifty years to collecting the reptilian and fish-remains 

 of fhe Oxford Clay of the neighbourhood. Patiently disinterred 

 and skilfully reconstructed by his own hands, his specimens fur- 

 nished the material for numerous important memoirs by specialists, 

 and a large part of them may now be found in the National Col- 

 lection. Although he was content to leave to others the description 

 of his finds, Leeds had himself acquired a good knowledge of 

 Vertebrate Palaeontology, and throughout his life he maintained 

 an interest in scientific matters. He died on August 25th, 1917, 

 in his 71st year. 



Baldwin Latham, a Fellow of this Society for more than 

 forty years, died on March 13th, 1917, in his 81st year. He was 

 by profession a sanitary engineer. He was also interested in 

 Meteorology, and contributed several papers to the Journal of the 

 Royal Meteorological Society, of which he was President from 

 1890 to 1892. During a long residence at Croydon he made a 

 study of the intermittent stream known as the Bourne, the move- 

 ments of which he was able to predict from observations of the 

 levels of wells. 



William Albert Parker, a schoolmaster at Rochdale, did 

 much to foster an interest in science in that part of England. He 

 was an enthusiastic geologist and archaeologist, and his investiga- 

 tions, carried on usually in collaboration with like-minded friends, 

 often led to results of importance. Chief among the contributions 



