Entomological Society, 4961 



ture, falling from its foot-hold to the bottom of the tank apparently dead. Excess of 

 heat and also strong sunlight are likewise to be as carefully guarded against; and 

 I may state, as an evidence of this, that on a particularly hot day during the summer 

 of 1854, being absent from home, the servant omitted to screen a small case from the 

 sun's rays during the hottest period of the clay, and on my return I found every 

 creature dead. It contained an Anthea Cereus, Actinia Dianthus, two specimens of 

 Athanos nitescens, and several others. Too much light has also the effect of rapidly 

 propagating several of the minute animalcules of a green colour, as the Euglena and 

 its congeners, which under this influence multiply so rapidly as to render the whole 

 water of a grass-green hue ; this will at times subside to the lower part of the tank as 

 evening approaches and disappear in the shingle bottom, but immediately the morning 

 light shines strong upon the aquarium it will rise like a thin green cloud and diffuse 

 itself throughout the whole of the water. Although this animalcular growth is not 

 unhealthy, yet it causes the aquarium to present a very unsightly appearance, and 

 prevents all observation on ihe habits of the inmates. The want of light, I need 

 hardly observe, causes the rapid decay of the vegetation, and the products arising 

 from this change are highly poisonous to animal life, the whole contents of the 

 aquarium becoming of a black colour, and very soon of an offensive odour.* — Robert 

 Warington ; Apothecaries Hall, September 11, 1855. 



Proceedings of Societies. 

 Entomological Society. 



November 5, 1855. — John Cciitis, Esq., President, in the chair. 



The Meeting was made Special, in pursuance of a Requisition addressed to the 

 Council, for the purpose of considering the By-Laws relating to Associates, and it was 

 decided that these By-Laws should be annulled. 



Donations. 

 The following donations were announced, and thanks ordered to be given to the 

 donors: — 'Smithsonian Contributions to Knowledge,' Vol. vii. ; 'Eighth and Ninth 

 Annual Reports of the Board of Regents of the Smithsonian Institution ;' ' Descrip- 

 tions of some New Marine Invertebrata from the Chinese and Japanese Seas,' by 

 William Stimpson, Zoologist to the U. S. Surveying Expedition to the North Pacific, 

 Japan Seas, &c, Lieut. John Rogers, Commander; all presented by the Smithsonian 

 Institution. 'Proceedings of the Boston Society of Natural History,' conclusion of 

 Vol. iv., and sheets I to 11 inclusive of Vol. v. ; by the Society. ' Proceedings of the 

 New Orleans Academy of Sciences,' Vol.i., No. 1 ; ' Constitution and By-Laws of the 

 New Orleans Academy of Sciences;' by the Society. 'Patent Office Report — Agri- 

 culture;' by the United States Patent Office. ' Ninth Annual Report of the Board of 

 Agriculture of the State of Ohio;' by the Ohio State Board of Agriculture. 'The 

 Natural History of the Tineina,' Vol. i.; by the Editor, H. T. Stainton, Esq. ' Pro- 

 ceedings of the Royal Society,' Vol. vii. No. 15 ; by the Society. ' The Zoologist' for 



* Printed in the 'Annals and Magazine of Natural History' for November, 1855, 

 and communicated by the author. 



XIV. F 



