TEANSACTIONS. 
List of DiATOMACE^ occumug in the neighbourhood of Hull. 
By George Norman^ Esq., Hull. 
(Communicated by Dr. Lankester. Read January 11th, 1860.) 
Following the example set by Mr. Comber, in his excellent 
List of Diatomaceae, of the neighbourhood of Liverpool ^' 
(Transactions of the Historic Society of Lancashire and 
Cheshire. — Vol. xi.)_, I have, in the following Paper, attempted 
to give as complete a list as possible of the JDiatomacese of 
Hull and neighbourhood. 
In so doing, I have not been so much influenced by the 
desire to make the paper of so much interest to Diatomists in 
general, as to compile a list which will be found serviceable 
to those who may wish to study and collect the forms occur- 
ring in this particular locality. Apart from this, however, the 
list may have its use (as far as it goes) in being a record of 
the local distributions of these beautiful forms. 
On referring to Mr. Comber^s list, it will be seen, that 
Liverpool and neighbourhood furnishes 257 species — a large 
number certainly, but falling considerably below the number 
detected in this locality. This may be partly owing to the 
area included in my list, being somewhat larger than the 
limit taken by Mr. Comber ; nevertheless, I may fairly say, 
that the neighbourhood of Hull is peculiarly rich in Diato- 
macese ; furnishing, as it does, nearly 400 species. 
It may be here remarked, that (with the exception of one 
haul off Flambro' Head) dredgings on our coast are untried. 
Sand gatherings which have yielding Dr. Donkin and others 
so many novelties have also been scarcely tried — These two 
methods, if properly carried out, would in all probability con- 
siderably increase the number of species. 
It is also very likely that I have overlooked many forms 
which would otherwise have been recorded, had the time of 
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