236 Woodhead : Draba muralis near Huddersfield. 



CE. crocata occurs. Well, it does look a staggering- change ! 

 Yet the changes in climate, air, 'cover,' since Bolton's day — in 

 (say) a century — have been vast. I know of no reason why 

 CE. fistiilosa should not have grown ' at home,' in the marshy 

 pastures and alluvial flats of the clough. embouchures, before 

 the pollution factories indirectly entail spread around their 

 vicinities. Like Hippuris, CE. fistulosa is of cleanly require- 

 ments, and not robust habit. Enrichment by manure of a field 

 where it qtows will alwavs easilv kill it. Moenchia erecta and 

 Trifolium subterraneum , such ?wzu apparently impossible growths, 

 might really very well have grown on the dry, sandy, and 

 gravelly edges about Skircoat and Warlev. I profoundly believe 

 they did, and that Bolton was nothing like such a blunderer 

 even in his maiden effort as very learned gentlemen of to-day 

 would have us consider. Thirty years' observation and field work 

 have removed very many of the cocksure notions with which the 

 writer's youth was decorated. Bolton, too, used in his novitiate 

 that itself inaccurate or at least skeleton Manual, the Flora 

 Anglica of Hudson. Still, after all the years we revert to 

 Ficaria verna ; and in like fashion Bolton's star will rise again. 

 In his phytographic picture of Halifax as it was he limned what, 

 apparently, successors are not content to leave unsmudged : let 

 them rather, I would advise, sketch painstakingly and as 

 artistically as they can consistent with truth, such a phytograph 

 of the parish To-day as shall be • a worthy companion and 

 contrast to the first, leaving such criticism as must be largely 

 suppositous severely alone. So only shall the verdict of an 

 interested Posterity be favourable. 



In conclusion, the one aquatic type of plant which can least 

 bear contamination of the water is Hippuris. And, while water 

 weeds have increased on Mr. Moss's own testimony, this 

 Hippuris is almost the only one that has vanished. In brief, 

 my critic appears to quarrel with the Deduction whilst furnish- 

 ing overwhelming witnesses to the facts leading to it. 



^ » 



NOTE—FLOWERING PLANTS. 



Draba muralis near Huddersfield. — Last month (Naturalist, July 

 1900, p. 222) Mr. W. Thompson records this species from a nursery waste- 

 heap in Carlisle, and asks if it has been previously noted in any other 

 county away from its natural habitat. 



In a nursery at Dalton, near Huddersfield, known as Ponty's Gardens, 

 this plant grew well for many years. The gardens are now abandoned and 

 the plant destroyed during - recent alterations. In the same grounds 

 Corydcilis bulbosa occurred, introduced with rhododendrons. — T. W. 

 Woodhead, Huddersfield, 23rd July 1900. 



Naturalist, 



