Fearnoiv. — Transporting Live Fish. 101 



A rough model of this device was constructed on December 

 19, 1921. On that date 20 6-inch albino brook trout were placed 

 in the aerating pan which was submerged one inch in seven inches 

 of water, the outside container being provided with an absorbent 

 jacket. The experiment was begun at 9:00 a. m., with water tem- 

 perature 4Q° and air 50° F. The can was held indoors without 

 aeration until 4 :30 p. m., when the temperature of the water had 

 gone up to 43° with the air 50°. As the fish were in excellent con- 

 dition at that time they were placed in an automobile and taken to 

 the writer's home, 7^/2 miles in the country, and held over night 

 without attention. The consignment was returned to the Bureau 

 and placed in the aquarium at 9 :30 a. m., on December 20. 



The appliance was delivered to one of the distribution em- 

 ployes and taken to White Sulphur Springs, West Virginia, for the 

 purpose of shipping adult trout to the Washington aquarium. On 

 January 5, 1922, the can containing five adult brook trout in ex- 

 cellent condition arrived at Washington at 5 :00 p. m., the ship- 

 ment having left White Sulphur Springs, West Virginia, at 8:30 

 a. m., the same day. 



DESCRIPTION OF DEVICE. 



Broadly stated the device is a container having a supplemental 

 compartment, the container to hold a body of water in which the 

 supplemental compartment is partly immersed. This compartment 

 is provided with means through which water from the main body 

 may circulate and be aerated. The purpose of the device is to 

 carry adults and fingerling fish in the shallow inner compartment 

 where the water is purest and to utilize their activity for the 

 aeration of the water. Means are also provided for controlling 

 the temperature of the water. The receptacle may be used without 

 the compartment for carrying fry, as in this case the problem 

 of aeration is insignificant. 



The container consists of an outside receptacle with a series 

 of perforations or vents somewhat below the upper edge for the 

 purpose of admitting air into the interior in case something is 

 placed on top of it. The compartment fits into the outer receptaclt 

 and is held in place by flanged edges which rest upon the shoulder 

 of the outer receptacle. The bottom of the lower tray has a number 

 of small apertures, and its sides taper from top to bottom more 

 rapidly than the sides of the outside receptacle, thus providing an 



