190 Correspondence—Ur. F. M. Bather—Mr. C. Lapworth. 
this however is the effect produced when no reference to the Society 
is made when the pagination is altered, and the type partially reset. 
All parties would be benefited if the Society would prohibit such 
unnecessary and confusing changes. But there is no inducement to 
a Society to consult the wishes of those who break up odd volumes 
of their Proceedings, while a careful worker or a good bookseller 
will take care to copy the information before the original covers are 
destroyed. Should public-spirit ever lead a Society to move in this 
matter in the direction of convenience to specialists, then the 
suggestions of Mr. Buckman would be admirable. One might 
further suggest that a fresh paper should always begin on a fresh 
leaf; the extra expense would be small, the convenience to book- 
breakers great. In some German and American magazines each 
paper begins a fresh ‘‘ Section”: so excellent an arrangement 
might well be adopted by our leading Societies. 
As to authors, they would further benefit their readers by attention 
to two points. First, by giving definite and descriptive instead of 
vague and unsatisfying titles to their papers. Secondly, by pub- 
lishing some address at which letters or papers would find them: 
one often wishes to communicate with a fellow-worker in one’s 
special field, but is deterred by the absence of any information as to 
his whereabouts, and one often hesitates to make the hardworked 
Editor a general postman. ‘The chief gainers by this would, how- 
ever, be the authors themselves. 
In referring to a paper it is very advisable to give its title, as well 
as that of the publication in which it appeared: for the possessors 
of a separate copy are often unable to recognize it when merely 
referred to by a string of letters and figures, especially when the 
proper information has not been given with the authors’ copies. 
Brit. Mus. (Nar. Hisr.), S.W. F. A. Batusr. 
THE OLENELLUS ZONE IN N. W. EUROPE. 
Sir,—It has been pointed out to me that the original discovery of 
the Olenellus zone on the European side of the Atlantic was not made 
by the late Dr. Linnarsson, as indicated in my recent ‘“ Wote on the 
Discovery of the Olenellus Fauna in Britain,” but was the work of 
my friend Dr. A. G. Nathorst, of Stockholm. Jn the year 1868 Dr. 
Nathorst detected and described a new and distinct horizon below 
the “ Paradoxides Beds” at Andrarum (Scania), containing annelide 
trails and examples of Lingula.* In the following year he dis- 
covered in the same horizon a Paradowides-like form, together with 
examples of Hilipsocephalus, and a species of Arionellus. Dr. ‘Torell, 
to whom he communicated this discovery, gave the Paradoaides- 
form the provisional title of ‘‘ Paradoxides Wahlenbergi,” and named 
the containing beds the “ Paradoxides Wahlenbergi strata ;’* but he 
did not describe or figure the new form. 
Linnarsson made his own discovery of Olenellus (Paradoaides) 
1 Guo. Mac., Nov. 1888. p. 484. 
2 Ofvers. Kongl. Vetens. Akad. Forhandlinger, Stockholm, 1869, p. 64. 
5 Torell, Petrefacta suecana Formationis Cambrica, 1869-70. 
