session 1901-1902. 
xli 
resembling the crest of an angry macaw. In the Temperate House 
many beautiful Himalayan rhododendrons and also camellias were 
seen in flower. 
Time only permitted a glance at the paintings in the “North” 
picture-gallery, made by the late Miss M. North to illustrate the 
vegetation of all parts of the world as actually seen by her, and 
presented by her to the Nation. 
Tea was partaken of in the Gardens, and on the way back to the 
principal entrance the grand hillock of Narcissi near the water- 
tower attracted attention and was much admired. 
Field Meeting, 3rd May, 1902. 
WATFORD, OXHEY, AND HARROW WEALD. 
Assembling at Bushey Station, the members first examined an 
alluvial deposit recently exposed in making an excavation for a 
new gasometer at the Watford Gas Works, close to the Hiver Colne. 
As a description of the section by Dr. Tones will appear in our 
‘ Transactions,’ it will suffice to say here that it is chiefly of 
interest from the large number of land and fresh-water Mollusca 
which occur in a bed of grey clay, the alluvium of the Colne in 
Holocene times, which is overlain by a bed of brown clay, black 
and peaty at the base, and underlain by a bed of coarse flint-gravel 
and sand reposing on the eroded surface of the Chalk. 
The following-is a list of the Mollusca which were collected by 
the present writer at the time and on a subsequent visit:— 
Helix rotundata, Mull. 
,, nemoralis, X. 
,, hortensis, Mull. 
,, arbustorum, X. 
,, caperata, Mont. 
Pupa muscorum (X.) 
Cocblicopa lubrica {Mull.) 
Succinea putris (A.) 
Planorbis spirorbis, Mull. 
Planorbis vortex (X.) 
,, carinatus, Mull. 
,, contortus (X.) 
Physa fontinalis (X.) 
Limnsea peregra {Mull.) 
,, palustris {Mull.) 
Bythinia tentaculata (X.) 
Pisidium amnicum {Mull.) 
,, fontinale {Drap.) 
These species are all living in Hertfordshire at the present day. 
The majority, it will be noticed, are fresh-water forms, and indi¬ 
vidually they are by far the most numerous, chiefly owing to the 
abundance of Planorbis spirorbis and Bythinia tentaculata. All the 
specimens of Limncea peregra which were seen appeared to be of 
the variety ovata. 
Oxhey Chapel was then visited, Mr. B. M. Finley pointing out 
its chief features of interest. It is nearly covered with ivy, and 
close to it at its east end are three Scotch firs. There are a few 
monuments in the chapel, and on a tablet of alabaster it is stated 
that the chapel was built in the year 1612 ; but it was then really 
rebuilt on the site of an older structure. The farmhouse, known 
as Oxhey Place, was also visited. According to Cussans,* this is 
* ‘ History of Hertfordshire,’ Cashio Hundred, p. 175. 
