Peacock : Naturalists in South Lincolnshire. 259 



Zone which occurs below, and which slightly overlaps the 

 Margaritatus Ammonite, being- placed as Lower Lias. In the 

 north of the county Ammonites margaritatus has not been found, 

 and there occurs but a few feet of clay between the Rock bed 

 (zone of Am. spinatus) and Am. capricornus ; so that either the 

 Middle Lias is represented only by the Spinatus Zone (Rock 

 bed) and some five or six feet of clay beneath, or the Am. capri- 

 cornus must not be taken as a Zonal Ammonite in the north of 

 the county, and the 60 or 80 feet of clay just underlying the 

 Rock bed must be classed as Middle Lias, notwithstanding that 

 it contains Am. capricornus. This is the view usually adopted. 

 Unfortunately a large portion of sheet 83 is obscured by drift 

 deposits, and the actual dying out of the Margaritatus Clays and 

 the coming in of the Capricornus Clays cannot be traced, or a 

 very pretty chapter in Lincolnshire geology would be elucidated. 



Miss S. C. Stow and Mr. J. S. Sneath reported on the 

 following plants. Under two hundred species were observed, 

 but the dry weather accounted for the poverty of the flora. 

 The following is a selection : — Erysimum cheiranthoides, near 

 Harmston Station ; Coronopus Ruellii, Navenby ; Raphanus 

 Raphanistrum, Harmston ; Saxifraga tridactylites, Coleby vil- 

 lage ; Filago minima, by railway, Harmston ; Hieracium boreale 

 and H. utnbellatum, the same. At Coleby, Specularia hybrida 

 and Calamintha arvensis in a quarry. Miss Stow pointed out 

 to us the upper leaf aborted by the grub of Cecidomyia veronicce. 

 Lycium was growing as an escape in Navenby, with the native 

 Salvia verbenaca. Lamium a??iplexicaule was seen in more than 

 one spot ; and Aira caryophyllea by the railway at Harmston. 



Miss S. C. Stow reports the following mosses, a good list 

 for such a time : — 



Ceratodon purpureus Brid. Mnium undulatum L. 



Fissidens taxifolius Hedw. Thuidium tamariscinum B.&S. 



Dicranella varia Schp. Pleuropus sericeus Dixon. 



Barbula unguiculata Hedw. Camptothecium lutescens B.&S. 



Orthotrichum'diaphanum Schrad. Brachythecium rutabulum B.&S. 



The following - six species were Brachythecium purum Dixon, 



found on a wall in Coleby village : Eurhynchium Swartzii Hobk. 



Grimmia pulvinata^Sm. Eurhynchium striatum B.&S. 



Tortula pusilla Mitt. Amblystegium serpens B.&S. 



Tortula lamellata Ldb. Hypnum cuspidatum L. 



Tortula ambigua Angstr. Hylocomium squarrosum B.&S. 



Tortula muralis Hedw. Hylocomium triquetrum B.&S. 



Barbula fallax Hedw. 



The conchologist had a holiday. Nothing was seen but the 

 commonest Zonilidce and Helicidce. 



1901 September 2. 



