220 



SCIENCE 



[Vol. LVI, No. 1443 



contribution to science as a paper communi- 

 cated to the meeting. The authors of papers 

 communicated at this meeting are urged to 

 supplement their papers by an exhibit of ap- 

 paratus in case such an exhibit is suitable and 

 practicable. 



Exhibitors are urged to prepare their ex- 

 hibits and descriptions so as to give them the 

 maximum educational value. 



Exhibits must be listed with the committee 

 at the Bureau of Standards not later than Sep- 

 tember 20. Blank entry forms for this pur- 

 pose may ibe obtained from Professor C. A. 

 Skinner, chairman, Exhibit Committee, 0. S. A., 

 Bureau of Standards, Washington, D. C. Ex- 

 hibits may 'be installed from October 24 to 25 

 and installation should be completed not later 

 than noon, October 26. 



Irwin G. Priest, 



Secretary 



VENTILATING CODE OF THE AMERICAN 

 SOCIETY OF HEATING AND VEN- 

 TILATING ENGINEERS 



The code for the ventilation of public and 

 semi-public buildings adopted by the American 

 Society of Heating and Ventilating Engineers 

 in 1915 has been submitted to the American 

 Engineering Standards Committee for ap- 

 proval as the American standard. 



This code was prepared by a committee of 

 the American Society of Heating and Ven- 

 tilating Engineers in response to requests from 

 state commissions, legislative ibodies, public 

 health agencies and other organizations for 

 suggestions to be used in the preparation of 

 legislation and regulations regarding the heat- 

 ing and ventilation of buildings. The com- 

 mittee endeavored in this code to cover the 

 general features most essential to the public 

 health, in such a manner as to protect the pub- 

 lic with the least possible expenditure for 

 equipment and without unnecessarily limiting 

 the methods of obtaining the desired results. 



Section 1 of the code relates to general 

 matters pertaining to all classes of buildings; 

 the remaining three sections relate to schools 

 and colleges, factories, and theatere, respec- 

 tively. 



Among the states that have utilized parts of 

 the code in their regulations are : Illinois, 



Indiana, Kansas, Massachusetts, Minnesota, 

 New Jersey, New York, Ohio, Pennsylvania, 

 Utah, Virginia and Wisconsin. A thoroughly 

 representative special committee, including all 

 the important organizations interested in the 

 subject, has been appointed by the American 

 Engineering Standards Committee to investi- 

 gate the status of the code in the industry and 

 the desirability of approving it. Sidney J. 

 Williams, chief engineer of the National Safety 

 Council, is chairman of this special committee. 

 The American Engineering Standards Com- 

 mittee would be glad to learn from those inter- 

 ested of the extent to which they make use of 

 this code, and to receive any other information 

 regarding the code in meeting the needs of the 

 industry. 



THE AQUARIUM OF THE ZOOLOGICAL 

 SOCIETY OF LONDON 



We learn from Nature that the Council of 

 the Zoological Society of London has approved 

 a scheme for the establishment of an aquarium 

 at the Zoological Gardens in Eegent's Park. 

 The aquarium is to he built under the Mappin 

 Terraces, but so installed as to be invisible from 

 the front, and will not interfere with the pan- 

 orama of the ten-aces. It will consist of a 

 crescentic gallery, 400 feet long, lined with 

 tanks on both sides. Those on the outer curve 

 will have both daylight and electric illumina- 

 tion, while those on the inner curve will be 

 lighted by electricity only, a method used at 

 the Berlin Aquarium with complete success. 

 The gallery will be divided into three parts — 

 fresh water, marine, and tropical aquaria — ■ 

 with special ponds for seals, diving birds, and 

 trout. The tanks are to be constructed with 

 the bottoms, sides and backs of slate, and the 

 fronts of polished plate glass set in a frame- 

 work of white marble. They will be provided 

 with rock-work arranged to suit the needs of 

 their inhabitants. The water will be kept con- 

 stantly circulating, flowing into the tanks from 

 high-level reservoirs and thence through a 

 series of underground filter-beds, on the plan of 

 those in use at the New York Aquarium, to low- 

 level reservoirs, from which it vidll be pumped 

 by electric pumps to the high-level reservoirs 

 again. Special arrangements are to be installed 

 for heating the tanks and for regulating the 



