IN MEMORIAM ALEXANDER M. RODGER 269 



interesting subject appears from the pen of J. W. Haigh 

 Johnson. 1 It is entitled " A Contribution to the Biology of 

 Sewage Disposal." This article, of which only a portion has 

 as yet appeared, draws attention to the great practical 

 importance of the subject, which is treated under various 

 heads. The first of these comprises a carefully written 

 historical account of the development of sewage-filters ; then 

 follows a section on " Organisms as an Index of Pollution," 

 including a list of the more characteristic organisms, arranged 

 according to the pollution intensity. Other sections are held 

 over for a future instalment of the article, which from many 

 points of view is worthy of careful perusal. 



3n flDemoriam. 



ALEXANDER M. RODGER 



Curator of the Perthshire Natural History Museum. 



On the 13th October 1914 there died in Perth, at the age of 

 forty-five years, Alexander M. Rodger, Keeper of the Museum 

 of the Perthshire Society of Naturalists. His death was 

 unexpected and sudden : he had been working to the end. 



Aleck Rodger came to me in his boyhood, more than 

 five and twenty years ago, to help in the little museum that 

 I was then building up in Dundee. He became skilled in 

 all sorts of museum handicraft, and was, in particular, an 

 admirable articulator, turning his hand to the setting up of 

 an elephant's skeleton or a whale's, and again, with more 

 delicate craftsmanship, putting together some disarticulated 

 skull of snake or bird, after the manner in which French 

 osteologists excel. He had in those days considerable 

 opportunities of travel, sometimes alone, sometimes in my 

 own company. So, for instance, he hurried on one occasion 

 to Orkney, where a shoal of Caaing Whales had come in, 

 and brought a rich booty of skeletons and other material 

 home. Then he went a couple of whaling voyages, firstly 



1 Jonrn. Economic Biology, October 1914, pp. 105-124. 



