99 
The Secret A ry said gold size remained viscid for a long 
time, and that if the cells formed of it were not well dried for 
a considerable period, or even baked in an oven, the size was 
very liable to “ run in” and spoil the preparation. He had 
re-varnished the Section’s collection with a mixture of Japan 
varnish and gold size, and thought the gold size would pre- 
vent the Japan varnish from becoming brittle or porous, 
while the latter would prevent the gold size from running 
in ; but he strongly recommended that all collections should 
be re-varnished every five years, and deprecated the use of 
covering papers on slides of fluid preparations, as it prevented 
this. 
Mr. Latham recommended the addition of a solution of 
india-rubber, and Mr. Parry of wax, to Japan varnish, to 
obviate its tendency to become porous and brittle. 
Mr. Heys showed a well mounted specimen of the exuvium 
of the larva of a Dragon Fly, and stated he found these 
insects were easily brought to cast off their skins by changing 
the water in which they were kept — if soft, to hard, and vice 
versa , or if muddy, to fresh. 
Mr. Parry exhibited mounted specimens of an Ammonite. 
Dr. Alcock said that among Foraminifera from Dogs Bay 
which he had lately mounted, he thought there were some 
slides likely to interest the members. Many of the deformed 
specimens of Lagena striata (Williamson) were very curious, 
and a double one, having the neck as well as the body double, 
deserved particular notice. He said that he was quite con- 
vinced the striated Lagena with a mucro at the base is not a 
mere sub-variety of Lagena striata, but is very distinct from 
it ‘ there were many specimens of it, all agreeing in their 
peculiar characters, and he proposed for it the varietal name 
of L. mucronata. The Lagena with a collar at the base of the 
