The Zoologist — October, 1873. 3711 



Aquarium, and was evidently at home there, I put into another vessel. 

 No other animal was present, but the strangeness of the new abode evidently 

 frightened it; it darted about in manifest alarm and excitement, and pre- 

 sently shot forth from its funnel a cloud of inky fluid to a distance of several 

 inches ; another and another discharge succeeded in rapid sequence, and it 

 was not for some time that the animal recovered its equanimity. It did not 

 appear to me that this fluid could be of much service to the little creature 

 in the way of concealment ; for although the matter was tolerably copious, 

 and densely black, it did not diffuse itself in the water, but remained in 

 masses, and when moved with a stick was drawn into slirav strinss." 



Here ends the second era in the history of the aquarium, and 

 although we are indebted so greatly to the leaders of this period 

 for their patient research and indomitable perseverance, it cannot 

 truthfully be denied that a large share of these qualities was wasted 

 on useless instructions about selecting and cultivating sea-weeds; 

 in cruel and naistaken advice to keep the captives without food; 

 and in denouncing the very principle, that of aeration and cir- 

 culation, by which alone the aquarium can become permanent. 



Edward Newman. 



(To be continued.) 



OmWiological Notes from Norfolk. By H. Stevenson, F.L.S. 



(Continued from Zool. S. S. 3561.) 



April, 1873. 



Spring Migrants. — The following dates of arrival of spring 

 visitants have been chiefly supplied me by Mr. J. H. Gurney, sen., 

 from his own observations, or with some other authorities in different 

 parts of the county :— Chiffchaff, March 27lh, Northrepps. Wry- 

 neck, March 31st, Surlingham ; April 6th, Keswick; 12th, North- 

 repps. Blackcap, April 5th, Northrepps. Redstart, April 7th, 

 Earlham. Swallow, April 14th, Elmham. Sand Martin, April 4th, 

 Surlingham ; 15th, Stoke. Sedge Warbler, March 30th, Surling- 

 ham. Lesser Whitethroat, April 16th, Keswick. Young song 

 thrushes able to fly, April 16th, Northrepps; young blackbirds, 

 April 20lh, Norwich. Nightingale, April 17th, Northrepps. Cuckoo, 

 April 22nd, Northrepps. A considerable flock of fieldfares was 

 seen at Northrepps on the 20th of April. 



Guillemot. — A bird killed about the 20th of March had acquired 

 its full summer plumage. 



