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value for killing and hardening small gelatinous
animals for microscopic preparations. A drop of a
solution, one-tenth to one-fortieth per cent., may he
added to a Avatch-glass of sea-Avater in Avhicli the
creatures a r c ; hut they must not ho allowed to
remain more than a fcAv minutes in contact Avith the
acid, as they rapidly turn hlack. They may then he
mounted in glycerine jelly, or in a solution of tartrate
of potash.
A r t if ic ia l lic a t is a h s o lu t e ly n e c e s s a r y fo r d r y in g
p la n t s in q u a n t it y a t s e a , p a r t ic u la r ly in lio t r e g io n s
Avliere th e a ir is c o n s ta n t ly s a tu r a t e d Avitli Avatei’y
v a p o u r ; a n d a n e x c e l l e n t d r y in g - r o om h a s h e e n d is c
o v e r e d in a sp a c e in th e fu n n e l- c a s in g s . The p la n t s
a r e p la c e d hetAvcen s in g l e s h e e t s o f h o ta n ic a l d r y in g -
p a p e r a n d p ile d , Avitli n um e r o u s Avire v e n t i la t o r s in t
e r sp e r s e d am o n g th em , in t o h iin d le s , Avhich a r e draAvn
tisrlit t o g e th e r Avith co r d s Avhicli s ta n d th e h e a t b e t t e r O O
than straps. The bundles are placed in the drying-
room, care being taken to tighten the cords from
time to time, and in two days the plants are quite
dry Avithout the trouble of changing the papers. A
someAvliat elaborate hotanical press which occupies a
corner of the AVork-room has heen entirely abandoned
for this method.
Two s h e lv e s f it t e d a lo n g th e fo r e -h u lk h e a d o f th e
Avork-room s u s ta in a d e ta c hm e n t o f th e A’e r y v a lu a b le
l i t t l e lib r a r y o f h o o k s o f r e fe r e n c e Avitli Avhicli Ave a r e
p r o v id e d ; th e r em a in d e r o f th e h o o k s fin d room
Avhere th e y c a n in th e fo r e - a n d a f t e r - c a b in s , in th e
Avard-room a n d elscAvliere.
The chemical laboratory (Big. 2) is on the starboard
side, nearly amidships. The following brief
3