CATALOGUE 



OP 



WOEKS AND PAPEES ON SPONGES. 



De. Bowbebank's volumes contain scarcely any 

 references to the writings of others. It has appeared 

 to the Editor, therefore, very desirable to furnish the 

 student with a list of the works and papers which 

 have been written on the subject. He has therefore 

 drawn up with great care the catalogue which follows. 

 It will be found, he trusts, tolerably complete. If, 

 however, omissions — and there must necessarily be 

 such — are found he would plead as extenuating cir- 

 cumstances : first, that it is the first catalogue of the 

 kind which has been attempted ; secondly, that it has 

 been prepared in the country, where he has had to 

 depend almost entirely on his own private library. 



No doubt there are many other papers scattered 

 among the very numerous natural-history periodicals 

 of Europe and America, and also among the Transac- 

 tions of their scientific societies, which have escaped his 

 notice. He has purposely only referred to a few out 

 of the many general text-books on Zoology in which 

 reference to the structure and organisation of the 



