disks, vviiich were motionlbss except, fo. ocv^asional fl^ips oi' 

 uheir mai|:ins. If any of ^nesG animals were sbii'red up they 

 would swim about like ordinary medusae but it would not be longj 

 before they would settle do\vn again and assuine their usual at- 

 titude upon the bottom. V'ithin this limited area there were 

 countless nu.mbers of them., and in m.ary places they were so 

 thickly spread that their margins touciied upon all sides, or 

 even overlapped. 



In order that tho rest of us mi;-:ht know something of this 

 marvel, Mr. Field dinped up a numl^er of these medusae in a pail 

 and brought them into the iviarine Laboratory of the Johns Hop- 

 kins University, which was stationed at this time at Port Hen- 

 derson, about two miles away. Upon examination of the me- 

 dusae they were found to ijelong, all of them, to a single nev/ 

 species of Gassiopea, a ,H^enus not known before outside of the 

 Red Sea, Indian Ocean and souLh-west Pacific ; and this pail- 

 ful, taken up at random., contained both adults ai^d youn:; in m;a 

 ny stages of growth. Of some of these ^rofesso>' brooks m.ade 

 drawings. Subsequently I visited thb Salt Fond to obtain more 

 of the youn;'; medusae and witli them I collected at random sub- 

 merged bits of wood and stems of plants, in the hope of find- 

 ing scyphistomas. On returning to the Laboratory, I was de- 



