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Case 1. — In the south end of this case are a few specimens of 
the lowest forms of animal life. The Protozoa almost wholly 
animals of microscopic size. These are illustrated by models, 
faithful representations of these animals magnified 2,300 times. 
Next in order are the P or if era, or Sponges. These include 
some interesting forms such as Neptune’s cup, the Class-rope 
Sponge, Venus’ flower basket, etc. 
Near the sponges begin the Coelenterata. This branch in- 
cludes the Hydroids, the various forms of Jelly-fishes, the Sea 
Anemones and the Corals. 
The Hydroids and Jelly-fishes, are represented by a number 
of glass models. These include one of the Portuguese Man-of- 
war. 
The remainder of Case i is occupied by the Actinazoa. A 
few of these, the Sea-anemones, form no solid skeleton and are 
represented here principally by glass models. 
Of the Corals which form a solid limestone skeleton there are 
two orders, viz: the Zoantharia and the Alcyonoida. All the 
solid corals shown in Case i and the north half of Case 2 belong 
to the first named order. 
The second order of Corals, the Alcyonoida, shown in the 
south half of Case 2, includes the Sea-fans, the Sea-whips, Organ- 
pipe Coral, etc. 
Crinoids, Star-Fish, Sea-Urchins, etc. 
Cases 3 and 4 and Table Cases. — The class of animals 
designated by the Echinodermata (having a prickly covering) 
includes the Crinoidea (Sea-lilies, etc.,) the Ophiuroidea (Brittle- 
stars and Basket Fishes), the Asteroidea (Star fish,) Echinoidea 
(Sea-urchins), and the Holothuroidea (Sea Cucumbers.) These 
are exhibited in the wall-cases 3 and 4, and in table-cases 5, 6, 7, 
8, 9, 10, II, and 12. The series begins with table-case 5. 
Case 5. — Here are shown the lowest forms of the class the 
Crinoidea. In wall-case 3 are shown some alcoholic preparations. 
In Case 5 are also exhibited the Ophiuroidea, some of which 
are known under the names^Brittle-stars and Serpent-stars ; others 
as Basket-fishes. 
Cases 6 , 7, 8 and part of 9. — Specimens of the order Aster- 
oidea (Star fishes). The simplest form of these animals is a cen- 
tral disk passing gradually into five arms ; but there are extreme 
