Aiiierican Fisheries Society 17T 



tlu' Frenc-li saixliiU' fislicrv. Tlie eggs are soaked in fresh water 

 l)efore using, and their small size makes them available for the 

 youngest trout. ]n fce<|ino-, care is exercised to prevent the 

 young trout from gorging; in other words, the food is given in 

 small quantities, and the feeding periods are prokmged. The 

 numner of automatically administering food to the young was 

 new to me, ))ut may Ije well known to some of the memhers of 

 the society. In the case of copepods. ordinary terra-cotta 

 flower ]i()ts are sus])cn(lc(l from a rod supported by two stakes 

 driven in tlie liottom of a pond or sluice, the top of the pots be- 

 ing ail incli oi- two alcove the surface of the water; in addition 

 to tlie hole in iht' bottom of the ])ots, three to hve holes are 

 niaile in \hv ^'.(\v ni'ar the base. When a dipperful of copepods 

 is ])ut into one of these pots, the tiny creatures gradually pass 

 out and are seized by the waiting trout. One ])ot will thus l)e a 

 reservoir wliich continues to discharge its contents for 20 

 minutes to one hour. 



Cod eggs are administered in a similar way. They are mixed 

 with water in lai'ge wooden or nietal buckets or tubs in the 

 l)ottom of A\liicli are se\eral circular holes into which short 

 pieces of nd)ber tulring are inserted, the size of the holes and 

 tubing being such as to secure a small, steady outflow. These 

 vessels may rest on a jdaidc or be suspended from a stake, the 

 ends of the tubes a iv\y indies aliove tlie surface of the pond; 

 and are set near the inflow, so that tlie food will lie scattered 

 by the current. Some of these feeding buckets which T saw in 

 oiieration will discharge for an hour or more without alteration. 



]\Ir. Franz von Pirko, the president of the Austrian Fishery 

 Society, has a large estate at Pottenlirunn, and on it is an ex- 

 cellent trout-rearing ]dant. An abuiuhmt — ])ractically \in- 

 limited — su])ply of fine spring water enables him to maintain 

 numy jionds and sluices, and to ])rovi(le ]ilenty of room and 

 natural food for the growing trout. At jiresi'ut the establish- 

 ment comprises 20 nursery and rearing ])on(ls and 24 so-called 

 nurst'i-y diTehes, with a total area of .')S,!)00 square meters, in 

 addition to which there are 12 kilometers of spring brooks 

 stocked with fish. The nursery ditches ( Brutstreckgraben ) are 

 very narrow, shallow water-ways, with considerable current and 

 well supplied witli growing ])lants, in which the trout are pbiced 



