The Irish Naturalist. 
Oct., 
" descending " series leads to the primitive annectant 
Symphyla, these being followed by the centipedes in 
" ascending " order. In a natural, phylogenetic scheme, 
the Symphyla would stand at the base of the assemblage 
near the Thysanura among the insects, while the millipedes 
and centipedes would form two divergent classes. An 
attempt at such a scheme may be found in a paper of mine 
published thirteen years ago.' 
Royal College of Science, Dublin. 
A COMPREHENSIVE AUTHOR-INDEX. 
The present volume — the twenty-fifth of the Irish 
Naturalist — is now nearing its completion, and it has been 
thought that a carefully-compiled author-index of the 
who^.e' series might be valued by our readers. We propose 
therefore to issue such an index as a concluding double- 
number for November and December of the current year. 
We are able to do this through the great kindness and 
energy of Mrs. R. F. Scharff, who has spent much time 
on a tedious piece of labour which will greatly faciHtate 
the work of those who may have occasion to consult the 
pages of this Magazine. 
IRISH SOCIETIES. 
DUBLIN NATURALISTS' FIELD CLUB. 
St:ptember 23. — Excursion to the Dingle. — A small number of 
members and visitors travelled from Harcourt Street to Carrickmines by 
the 1.35 train. A walk across the fields brought the party to the Dingle, 
and as the weather during the preceding weeks had been very fine the 
sole of the gap was quite dry, and members were able to pass through 
the dense thicket of Holly, Oak, Hazel, Wild Cherry and Rowan which 
fills the northern end of the Dingle. During the walk the conductor, 
J, de W. Hinch, pointed out the evidence which proves that this gap is 
the old overflow channel of a glacial lake. From the glen the party 
walked to the Scalp, and after tea returned to Dublin by train from. 
Carrickmines. 
^ " On the Relationships between the Classes of the Arthropoda." 
Proc. R. Irish Acad., vol. xxiv. (B). 1903, pp. 320-360, pi. vi. 
