122 



The Natuealist. 



L. fusca, Curt. Hazelgrove ; Bowdon. 



Baetis binoculatus, L. Manchester ; Bowdon : Hazelgrove. 



B. Rhodani, Pict. Manchester ; Pettjpool ; Marple. 

 Centroptilum pennulatum, Eaton. Bramhall brook, 9th Sept., 1868. 

 Cloeon dipterum, L. Bramhall brook. 



C. russulum, Mull. Bramhall brook. 



Caenis macrura, Steph. Bollin valley, 19th Sept., 1876. 

 PsociD^. 



Atropos divinatoria, Miill. Common. 



Clothilla pulsatoria, L. Common. 



Psocus variegatus, Fab. Stretford, 8th Sept., 1860. 



P. fasciatus, Fab. Manchester; Hazelgrove; Bollin valley. 



P. sexpunctatus, L. Stretford, 8th Sept., 1860. 



P. bifasciatus, Latr. Common. 



Stenopsocus immaculatus, Steph, Bowdon. 



S. cruciatus, L. Stretford. 



Csscilius pedicularius, L. Manchester. 



Peripsocus phaeopterus, Steph. Bowdon, 9th Sept., 1874. 



Elipsocus unipunctatus, Miill. Manchester Southport ; Marple, 



E. hyalinus, Steph. Manchester ; Stretford ; Bowdon. 



Windsor Park, 

 Southport. 



OX THE DESIGNATION OF CERTAIN FUNCTIONS 

 OF PLANTS. 



By Thomas Hick, B.A. B.Sc. 



In the preface to the English edition of Prantl's Elementary Text- 

 book of Botany," objection is taken by Dr. Vines, the editor, to the 

 term " assimilation " as at present used by many botanical writers, 

 when treating of the physiology of plants. As every botanist is 

 aware,it is now almost exclusively employed as a special designation 

 for that particular form of constructive metabolism which goes on in 

 those parts of plants that are provided with a chlorophyll apparatus, 

 and which results in the formation of organic substance — generally 

 starch— from the decomposition of carbonic acid and water, under the 

 influence of light. That in this sense the term is by no means an 

 appropriate one, will doubtless be admitted by most biologists, the 

 more so that when employed with respect to the physiological pro- 

 cesses of animals, it is charged with another, and indeed quite a 

 distinct signification. 



