Fetch : Mycefosoa in the Scarborough District. 



195 



partly cut. I visited the scene a few days after this earHer 

 flood and noticed that the torrents had gathered on the plateau 

 mainly from a large bare tillage field recently sown with turnips 

 where there was no impediment to surface-drainage, while the 

 thickly-grown corn-crop of an adjacent field, on which the down- 

 pour appeared to have been quite as great, had entangled the 

 water and given time for its underground absorption. In the 



Pluvial Denudation in Yorkshire. 



same way, on impervious rocks the bare slopes drain quickly 

 dry, while those covered with vegetation may remain sodden for 

 weeks. The photograph, taken three days after the incident, 

 shows a near view of two of the gullies, the greatest depth of 

 which was about ten feet; another is just seen edgewise in the 

 middle of the picture ; and traces of erosion will also be noticed 

 in the distant hollow. 



lyiVCETOZOA. 



Mycetozoa in the Scarborough District. — In addition to 

 the species previously enumerated in 'The Naturalist' the fol- 

 lowing were found on the Whitsun excursion : — Comatricha 

 persoonii, Cloughton Moor ravine, on holly leaves ; Didymiiim 

 nigripes 2ind Trichia persimiiis, Oy^dsX^, and Ceratiomyxa ?nucida, 

 Trichia fallax, T. hotrytis, T. varia, all on wood in Breaday 

 Gill. — T. Fetch, 8th June 1904. 



1904 July I. 



