1896.] RULES OF ZOOLOGICAL NOMENCLATURE. 307 
species can be got into a page (which appears to be barely possible) 
and allow 800 pages to each volume, 96 volumes would be required 
to complete ‘ Das Tierreich. As, however, the great firm of 
Friedlander and Son' have undertaken the publication of the work, 
and appear to have agreed to find the necessary funds to pay for 
the contributions to it, we may, I think, feel tolerably certain that 
the task will be undertaken, although it is probable that many of 
us may not live to see its completion. 
The German Rules for Nomenclature (App. IT. no. 10), to which 
I am about to direct your special attention to-night, are to be those 
employed by the various contributors to the ‘Tierreich,’ as their 
guide in determining the scientific names to be used in the work. 
It will be obvious, therefore, that for this cause they are of special 
importance and are well worthy of our consideration. Prof. F. E. 
Schulze, who has undertaken the editorship of ‘ Das Tierreich,’ 
and with whom I have been in correspondence on the subject, 
having courteously expressed a wish that it might be possible to 
reconcile the differences between the German Rules and the Code 
of Nomenclature adopted by the British Association and usually 
employed in this country, I have undertaken to bring the subject 
before this Society. 
In order to consider whether we can agree it is necessary first 
to ascertain the points of difference, and these are what I propose 
to bring forward to-night. But before doing so I will commence 
with a few general remarks on some of the principal codes of 
nomenclature that have been put forward by modern zoologists. 
As we all know, I believe, the first code that adopted the “ law 
of priority” as its principal rule and originated various other 
usages, to which we are now well accustomed, was that drawn up 
by Strickland in 1842 (Appendix II. no. 1). The Stricklandian 
Code, however, although generally approved and adopted, was not 
at that time formally sanctioned by the British Association. 
In 1863 the late Sir William Jardine took up the subject, and, 
1 The contract between the Deutsche Zoologische Gesellschaft and Messrs. R. 
Friedlander and Son will be found printed at full length in the ‘ Verhand- 
lungen’ of that Society for 1895, pp. 4 et seqg. 
Number. 
Brought forward.........+++ 84,250 
I OMUBLACERN Melons oan addsde-oelstcrs cdecraccnansach=sussess 20,000 
VOR AP GCRIADG ous cuascoasbailoo=nncaancosasecensss seaasese 10,000 
11. Myriopoda and Prototrachedt]a .........-1+.+.s00008 3,000 
WOMMITISCOLOD) taste costes carscaests cctceeatcdeecasesss seh sce 250,000 
1B. HCRnodennd s..2-Nedsecsscciccende-csecesoseeseee-0ese 3,000 
VAS Ver TESA Ns eeapstascero dhs -Sisadacecsdseccdssccesne oases 6,150 
Win Om@lemtendd descnc-sae-ancosce:sci<scoaces-conseastseeseos 2,000 
1G. Spongie ......ce.ccreccsecseccensccnrcccscscsoescosorers 1,500 
Ta ETOCOCOM Ast sivecsstoncoc t-te sisecesccsscescnsbesndee 6,100 
Mo taliecatasesceeason= 386,000 
This may be compared with Dr. Giitither’s estimates of the described species 
in 1830 (73,588) and 1881 (311,653), lately published in the ‘Annals & Mag, 
of Nat. History’ (ser. 6, vol. xvii. p. 180). ie 
