5 GO PROFESSOR NEWTON ON THE GREAT FLOOD OF 1852-3 
years of cultivation must have prevented their development, and 
none of the other strips of the plantation showed at that time any 
symptoms of fungoid growth. 
A few days later I visited the spot again, there were not then 
quite as many of these fungi among the Willows, but in the strip 
planted with Abies douglasii, there was as remarkable a crop of 
Arjavicus ( Hebeloma ) mesophceus, of Persoon, an allied species, 
generally found in fir-woods, but differing in marked characters 
from the first described fungus. In the strip of Oaks, which 
separated the Willows from the Firs, a few of both these species 
were to be found, but none of any other kind. 
I can suggest no explanation, but I merely record the fact, that 
when land which had been under cultivation for two hundred and 
fifty years was planted with Willows and with Firs, there sprang up 
in three years’ time, among the Willows, a fungus which had never 
been noticed there before ; and among the Firs another species of 
fungus, found only in well-established fir-woods. 
y. 
ON THE GREAT FLOOD OF 1852-3 IN SOUTH- 
WESTERN NORFOLK. 
By Alfred Newton, Hon. Mem. 
Bead 28th November , 1893. 
It had long been my wish, on some fitting occasion, to furnish this 
Society with an account of the Great Flood, which at the beginning 
of the winter of 1852-3 laid under water so many thousands of 
acres in South-Western Norfolk, beside a not inconsiderable area 
in the adjoining counties of Suffolk and Cambridgeshire, and for a 
time had a very marked effect upon a portion of our Fauna. On 
last Whit-Monday, when some members of the Society honoured 
Cambridge by a visit, I took the opportunity of saying a few words 
