BULLETIN OF THE UNITED STATES FISH COMMISSION, 397 



coming leaner from day to day, lose their fine looks, and finally become 

 unfit for human food.* 



Martin Brandt's new method is said to have this advantage — that it 

 does not change the shape, looks, and flavor of the fish, and prevents 

 the development of fungus. It is done by compressed air. It may be 

 continued for an unlimited period and be employed in the holds of ves- 

 sels, railroad cars, warehouses, «&c. For lining the rooms where the 

 fish are kept metal or cement is used. The preserving medium weighs 

 very little, as 1,000 cubic feet of compressed air weigh but 10 pounds. 



In Mr. Brandt's warehouse a pipe runs along the wall from the floor 

 to the ceiling, and back again, twisting several times, and finally ending 

 on the floor. The machine or development apparatus consists of an 

 iron cylinder connected with a so-called vacuum air-filter. The cylinder 

 is filled with air compressed by about 200 atmospheric pressure. By 

 means of the vacuum apparatus the machine is connected with the 

 pipe in the warehouse, and the compressed air flows, after a valve 

 has been opened, with great velocity through the filter and the pipes. 

 H^ew air is also introduced in the vacuum apparatus through cotton 

 filters, thus purifying it of all matter apt to decay, and, united with 

 the stream of compressed air, it continues to pass through the pipes. 

 As the air expands it loses some of its warmth and is gradually cooling 

 otf. When let out of the pipes the air, which has now become quit© 

 cool, rises evenly throughout the room, and drives the warm air, filled 

 with germs of fungi, through an opening in the ceiling. As the in- 

 ventor claims, fish and meat can be kept fresh for an unlimited period 

 in rooms whose air has been purified in the manner described above. 



19r.-A lilST OF THE BI.AIVK FORMS, CIRCFf.ARS, AND Mir^OR PUB- 

 lilCATIONS OF THE U^flTED STATES FISH COIHmiSSIOIV, FROM 

 AUGUST 1, 1SS3, TO Al'«UST 1, 1SS4.1 



By CHAKLES 1^, SCUDDSR. 



447. Blank for abstract of disbursements, by H. A. Gill, disbursing agent of the 

 U. S. Fish Conjinission. 8 columns. August 8, 1883. 1 p., -vrith filing on reverse. 43 

 by 56 cm. 



448. Blank for ackuowledgiug receipt of letters. September 6, 1883. 1 p. 20.5 by 

 25.5 cm. 



449. Circular letter announcing that the sending of U. S. Fish Commission Bulletin 

 signatures will be discontinued until receipts for former signatures are returned. Hek- 

 tograph. September 8, 1883. 1 p. 20.5 by 25.5 cm. 



" This is true, although the process is not so rapid as some people imagine. We 

 hardly think that any other method will entirely replace this one. In the first place, 

 it is, wherever practicable, the cheapest method of preserving fish, and, in the second 

 place, many consumers desire live fish (at least freshwater fish). The quantity of 

 fish which is preserved in this matter is not small, but, on the contrary, enormoua. — 

 Editor, Deutsche Fiwherei-Zeitung. 



tThis id a continuation of the list in F. C. Bulletin, Vol. Ill, page 129. 



