3o8 Sheppard : HuITs Contribution to Science. 



His most important published work was unquestionably his 

 List of Local Diatoms, three editions of which were issued. 

 This has been of very great service to later workers, and at the 

 time it was first issued it was by far the most important list of 

 its kind in the country. 



Although the study of diatoms was such a favourite one with 

 so many naturalists during Norman's time, he was able to make 

 several additions to our knowledge on the subject. Some new 

 species which he found were named after him ; others he named 

 in honour of his friends and fellow-workers, Sollitt and Harrison. 

 For example, there are Coscinodiscus Normani, Pleurosigma 

 Norman i, Odontidiuni Harrison ii, and Aulacodisciis Sollittianiis. 



Norman's excellent microscope and his collection of several 

 hundred slides are now preserved in the Museum in Albion 

 Street.""" 



Thoug'h it is manifest that he took a keen interest in botanical 

 matters, 1 have not been able to find that he published anything 

 relating to that subject. He has, however, supplied others with 

 material. He had a great liking for ferns, exotic and British, 

 and had a very fine collection of the former in his greenhouses. 

 A great number of the excellent illustrations in Lowe's ' Ferns, 

 British and Exotic' (8 vols., 1855-1860), are from specimens 

 supplied by Norman, and the author states he is indebted to 

 him ' for many plants and fronds of rare ferns, as well as for 

 the loan of several valuable foregn works upon the different 

 Filices. ' 



That he also did some work amongst the local plants is only 

 what we might have expected. Fortunately, his records, in his 

 own handwriting, are preserved in two books — 'The Botanist's 

 Manual' (Sheffield, no date), and Baines's ' Flora of Yorkshire.' 

 This latter contains Norman's dated signature (1845), and the 

 records will presumably date from that time. Mr. J. F. Robinson 

 has carefully examined both books, and finds that in many cases 

 Norman's records are the earliest for several East Riding plants, 

 whilst in others they are additions to the East Riding Flora. 



Between 1843 and 1864 Norman regularly contributed to 

 the 'Zoologist' particulars of the local occurrences ot uncommon 

 mammal, bird and fish. 



Contemporary with him were Robert Harrison and J. D. 

 Sollitt, both able naturalists, who indirectly accomplished much 

 work in connection with the Literary and Philosophical Society 



* Of the value of these probably no one can speak with more authority 

 than Mr. is. H. Philip, who has spent many months in examining them. 



Naturalist, 



