386 
all the bones. On the bodies of the vertebras I found several 
species of Mycetozoa, especially a Physarum, which I regarded at 
the time as P. nutans Pers., but which my friend Mr. Phillips 
thinks is Didymium rufipes Fr. The most remarkable Fungi, 
however, were two Agarics which grew upon the skull, Agaricus 
bullaceus Bull., and Agaricus ostreatus Jacq. The former is not 
at all a common species. I have only seen it once before, when it 
grew upon a rotten mat that had been buried in a manure heap. 
The latter agaric grew upon some dry cerebral matter in the 
interior of the cranium. A succession of fine specimens have 
occurred during the winter. Its proper abode is dead wood, 
especially Laburnum, and it is very curious that an esculent species 
should choose such an unsavoury matrix as the skull of a whale. — 
Charles B. Plowright. 
XII. 
FAUX A AND FLORA OF NORFOLK. 
Part VII. DiatomacejE. 
By F. Kitton, ILon. F.R.M.S. 
Rather more than a century and a quarter ago, there lived in 
Norwich an untiring student of natural history, particularly that 
portion of it requiring the aid of magnifying glasses for its exami- 
nation : the name of William Arderon is now probably known to 
few modern naturalists, although in his day he was highly esteemed 
by men far above him in social position. He came to Norwich as 
an excise officer ; and the savans of the city, rather than lose him 
when his duties terminated in that locality, made him manager of 
the New Mills at a salary of ,£G0 per year, which situation he 
retained until his death. 
During his residence in Norwich, he was made a Fellow of the 
Royal Society, and contributed many papers to their Transactions. 
The ditches around the city were laid under contribution, and 
he was often rewarded for his trouble by the discovery of some- 
thing “ new and strange.” Sometimo in July, 1745, ho discovered 
