ON THE ZOOLOGICAL STATION AT NAPLKS. 101 



of many of his experiments on CapitellidiB the excretion of carmine lasted 

 for several months. The Araphioxus, indeed, retained the pink colonr 

 they assumed after feeding with carmine in undiminished intensity during 

 several weeks. The fact, too, that the carmine was no longer in the 

 form of granules would render it less easily detected unless in large 

 quantities. 



In the cojlomic funnels, described by Professor Lankester as probably 

 excretory organs, I was unable to detect the presence of carmine, and 

 these organs probably excrete directly fi'om the coelomic fluid in which I 

 discover any carmine, whei'eas the vascular system possibly excretes 

 through the highly vascular gland in the pre-oral region. 



Later on in my stay I had the opportunity, with a plentiful supply of 

 material, to observe the segmentation stages, especially of Loligo and 

 Sepia, but unfortunately could not obtain any eggs of Octopus. 



I also examined the coelomic fluid of a large number of Chistopod 

 worms, with special regard to the excretory particles contained in the 

 coelomic corpuscles. 



I had, too, the opportunity of extending my knowledge of the general 

 marine fauna, and especially of the Pelagic forms in which the Bay 

 of Naples is so wonderfully rich. Such a general study is, perhaps, 

 for younger students of Biology of greater importance when occupy- 

 ing a table at the Zoological Station than the more specialised research 

 work, especially on the first visit to a marine station. 



By no means the least important feature of my stay at Naples was 

 the opportunity it gave me of intercourse with such eminent workers 

 as Dr. Dohrn, Dr. Eisig, and Dr. Mayer, from whom no student could 

 fail to gain in experience, through their readiness to give counsel and 

 advice. Lastly, the opportunity of discussing subjects of biological 

 interest with the students of other nations, representing as they do at 

 Naples almost all the schools of Europe, makes a stay at the Zoological 

 Station conducive to a widening of our point of view, and is of the 

 utmost importance. 



For the vast amount T have gained during my stay at Naples in 

 knowledge, experience, and I may say also in friends of kindred interests, 

 I desire to express my thanks to the Committee of the British Association, 

 who, in granting me the table, conferred uj/on me so lasting a benefit. 



HI. Report on the Occupation of the Table, Inj Mr. W. L. Calderwood. 



Having had the privilege of working at the British Association 

 table in the Zoological Station at Naples, I have now the pleasure to 

 leport on the results 1 have obtained. At the outset I must thank Prof. 

 Dohrn for his kindness in making the necessary arrangements, and like- 

 wise his staff for their assistance during my work. 



I commenced, first of all, a general study on those animals which, 

 easily obtained in the Mediterranean, are not to be found in the colder 

 seas surrounding the British Isles. 



After passing over much well-trodden ground in the Invertebrate 

 Group, I turned my attention to fishes, and eventually concentrated 

 my work particularly upon the so-called Flying Gurnard, Vactylopterus 

 volitans. In the study of this fish, therefore, the most of my four months' 

 stay was taken op. 



