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ZOOLOGICAL SOCIETY BULLETIN. 



PORTABLE METAL FRAME AQUARIUM, 

 n all sizes and the only kind that is satisfactory for larger 

 sizes above eight or ten gallons. 



Special care should be taken, whenever any 

 new animals are added, to observe that they do 

 not die and upset the adjustment of the aquar- 

 ium by their dccom])osition. Portions of plants 

 which are deteriorating maj' be removed and 

 fresh ones added. Practically all of the ma- 

 rine animals are carnivorous. They may be fed 

 upon pieces of clam, 0}'ster, or fish, cut to proper 

 size or finely grated for the smaller animals. 



Sea snails make good scavengers, but some of 

 them are vegetarians and may attack the plant 

 life too freely. However, these are just the 

 points which the aquarist will be interested in 

 determining for himself, and, with the proper 

 attention, will offer no great difficulties. As in 

 the fresh-water aquarium, it is very important not 

 to overfeed and to remove by means of the siphon 

 any excess food material which might by decay- 

 ing interfere with the proper balance of life. 

 AQUARIUM SOCIETIES. 



Interest in the small aquarium has been so 

 sporadic in this country that there has been thus 

 far little tendency for the formation of aquar- 

 ium societies. In some of the European coun- 

 tries, notably Germany, such societies are very 

 common. At present there are but four in the 

 United States, as far as tlie writer has been able 

 to learn, though there should be one in every 

 city. The members have an opportunity to talk 

 over their difficulties and successes, to exhibit 

 and exchange specimens and to discuss the vari- 

 ous phases of this field of natural history. 



The Aquarium Society. — This organization, 



which originated first as the 

 Salamander Society, dates 

 from April 13, 1893, when 

 it was formed for mutual 

 benefit by five enthusiastic 

 aquarists in the Bronx. The 

 societj' flourished under this 

 name for several years, hold- 

 ing meetings in the Bronx, 

 New York City and Jersey 

 City, but in December, 1896, 

 was reorganized under the 

 present name. 



The society now enrolls 

 about sixty active members. 

 ^Meetings are held twice a 

 month, alternating between 

 the American Museum o f 

 Natural History in New 

 York City, and the German- 

 American School in Jersey 

 City. An annual exhibition, 

 which arouses considerable 

 outside interest, is held for 

 a week in November. 



The members of the society are chiefly inter- 

 ested in exotic fishes, with the exception of gold- 

 fishes, comparatively few of which are kept. 

 Mr. Isaac Buchanan, l-t3 Liberty Street, New 

 York City, is the President, and the annual 

 membership fee is $2.00. 



Thf; Aquarium Society of Philadelphia. — This 

 Society, organized May 5, 1898, and reorganized 

 in January, 1900, has 125 active and ten cor- 

 responding members and is the largest of the 

 Americm societies. 



Meetings are held the fourth Wednesday of 

 each month. May to August excepted, at Fra- 

 ternity Hall, 1414 Arch Street, Philadelphia, 

 Pennsylvania. The society specializes in gold- 

 fishes, particularly fringe-tailed telescopes and 

 fringe-tailed Japs. Exhibitions are held at 

 each meeting. Some of the competitions are: 

 best goldfish owned by member ; best fish raised 

 by member ; best household aquarium ; telescopes 

 over one year; fringe-tails over one year, etc. The 

 society has not issued any publications, but has 

 contributed to The Guide to Nature. Dues, $1.80 

 per year. President. Mr. William T. Innis, .Jr., 

 l.Sll Sansom Street, Philadelphia, Pennsylvania. 

 Brooklyn Aquarium Society. — Organized in 

 February, 1911, this society has already fifty 

 members and is growing rapidly. In May, 

 1911, the first number of the Brooklyn Aquar- 

 ium Society Bulletin — the first and only such 

 journal to be issued by any society in America — 

 api)eared. Thus far the society has held no 



