B70 GQ, Tt, MARTIN, 
QGrovvenor, and Cuonot in thew proof that the nomatooysts of 
Molde wore derived from them prey, 
Thin nummer T found Mierostoma in Hiekling Broad in 
Novfolk, In thin Broad, Hydin seems to be fairly rave, but 
Cordylophora laeuatria in vory abundant 
Mont of the Microstoma Tt found were absolutely free from 
Homabooydts, bub some contamed the nomatoeyats of Cordyloe 
phora in the ordinary vacuolos under the skin, Oordylophova 
conta nomatooyata of two kinds, 
(1) Oval Barbed Nomatocyatsa—Those are of a very 
ohavnactoristioa shape, ‘They are more or loss egg-shaped 
Abvnobarod with one polo samattor than the other, and in pros 
filo the one side in aliehtly convex whilst the othor is concave, 
In the exploded condition the thrond passes trom the small 
polo, the awollon base of the thread is rather long and set 
With Himerous barbs whieh decrease shg@htly in lonebh in the 
(iinhal portion, ; 
(2) The Small Oval Nomatocyats avo rather like the 
vmatloval nomatoeyats of Hydra, and are provided with a 
short thiek throad froe from barbs, 
1 placed a Miorostoma, from Thekling, in which [t had 
nob boon able bo find nomatoeyats, ina watcheelass with some 
blonsod-up Cordylophora, and twontysfour hours afterwards | 
fixod and oub soohions of ib. he eat stil contaimed portions 
of disintegrating Cordylophora, but nomatooysts were found 
undor the akin, both im the oxploded and the unexploded 
eondibion, 
By fooding a Mievostome with Cordylophora whieh had 
proviously beon fod upon Hydra t suceeeded in obtaining: a 
mixod infeetion, the animal haying both Cordylophora and- 
Hydra nomatoeyats undor the skin, 
Third Course. This would soom at first sight the most 
rondy method of settling the question, bub thore aro two very 
grout dificullios, During the greater part of the year 
Miorostoma roprodnoos entivoly by budding, and if is only in 
Soplombor im Seotland that TL have been able to find sexual 
individuals, . 
