LINCOLNSHIRE NATURALISTS’ UNION AT LINCOLN. 253 
arvense L., Stachys palustris L., Lamium amplexicaule L., Scleranthus 
annuus L. (an uncommon plant with us), Fotamogeton pralongus 
Wulf., P. densus L. (a small depauperate form), Carex acuta 1.., 
Alopecurus geniculatus ., Festuca ovina L., Bromus stertlis L., 
B. mollis .., Equisetum palustre L., E. limosum Smith, and Z. fuviatile 
Syme. Botanically speaking this was the best day the Union has 
ever had yet. 
On the 25th, Mr. F. M. Burton, Rev. W. Fowler, and Rev. E. A. 
Woodruffe-Peacock continued their labours by hunting the localities 
for Cardamine amara L., Rosa spinosissima \.,and Orobanche major L., 
given on the type specimens in the County Herbarium, but without 
Success in any case. During the day they came across the following 
good plants for North Lincs, 53: Ranunculus penicillatus Hiern, 
Brassica cheiranthus Vill., and Medicago maculata Sibth. The latter 
on the bank of the Trent ; and I may add, for it is a first record, that 
Miss Lane-Claypon showed me a specimen from a similar place on 
the Forty Foot Drain, Wyberton (South Lincs. 52) this season. 
On the South of the Foss Dyke at Saxilby (South Lines., 52) we 
found Barbarea stricta Andrz., Cerastium glomeratum Thuill., 
and Carex paludosa 
The Conchological Section was represented by Mr. Frederick W. 
Fierke, of Hull, who reports as follows :—As it had been announced 
that the mollusca of the district had been only partially, if at all, 
investigated, it was for the members of the section present on this 
occasion to furnish practically an initial list. ‘The section was repre- 
sented by Mr. W. Denison Roebuck, F.L.S., of Leeds, and the 
Hon. Sec., Mr. F. W. Fierke, of Hull. The day was unfavourable 
to the pursuit of the terrestrial mollusca, the ground being exceed- 
ingly dry, Luckily, however, the district soon gave ample evidence 
of an alternative programme, and the conchologists, with the aid of 
their scoops, had their time fully and profitably occupied. The 
pools and ditches teem with molluscan life of a varied and most 
interesting character. Conchological operations were almost exclu- 
Sively confined to the Foss Dyke and the adjoining pools of water. 
In Foss Dyke, Viviparus viviparus (L.) occurred in great abundance, 
whilst in the pool close by Viziparus contectus was observed in 
less numbers and existing under somewhat different conditions. 
- Dreissensia polymorpha was found attached to stones, wood, and the 
roots of plants, and was also very abundant. In a field covered 
with marshes, Bud/inus Aypnorum was very plentiful, and appeared 
to hold almost absolute possession, Z. feregra being the only species 
taken with it. At the conclusion of the day’s work it appeared that 
7 terrestrial and 25 aquatic, or a total number of 32 species of mollusca, 
