ZU M 



Z YM 



Div. IV.— RADIATA. 



Animals disposed around an axis. 



Class. 



L ECHINODERMA 



, Hard-skinned. 

 II. Intestina 



Intestinal worms. 



III. ACALEPHA 



Sea nettles. 



IV. Polypi 



Plant-like animals. 



V. Infusoria 



Water animalcules. 



Order. 



( 1. Pedicellata. 

 \ 2. Apoda. 

 ( 1. Cavitaria. 

 t 2. Parenchyma. 



{I. Simplex. 

 2. Hydrostatica. 



)1. Carnosa. 

 2. Gelatinosa. 

 3. 



{I 



Corallicola. 

 Rotifera. 



2. Homogenea. 



Example. 



Star-fish. 



Sipunculus. 



Guinea-worm. 



Tapeworm. 



Medusa. 

 /Spanish man-of- 

 t war. 



Sea anemone. 



Vorticella. 



Coral. 



Wheel insect. 



Globeanimalcule. 



ZOO'NIC ACID iCZov, an animal). 

 This is merely the acetous acid, holding 

 animal matter in solution. 



ZOO'NOMY i^wov, an animal, vo/nos, 

 a law). The science which treats of the 

 laws of organic life. 



ZOO'PHAGOUS (^wov, an animal, 

 (pdjco, to eat). Animal-eating ; a term 

 applied to a division of the cetaceous 

 animals, and to a tribe of carnivorous 

 gasteropods — the pectinibranchiata of 

 Cuvier. See Phytophagous. 



ZO'OPHYTES {iwov, an animal, 0uto>/, 

 a plant). Animal -plants ; a division of the 

 animal kingdom, including the corals, 

 sponges, and other aquatic animals allied 

 to them. They are so named, because, 

 "While they are the habitation of animals, 

 they are fixed to the ground, and have the 

 forms oi plants. They were considered by 

 Cuvier as synonymous with the radiata. 

 Their characters are given under the 

 terms Echinodermata, Entozoa, Aca- 

 lephae, Polypus, and Infusoria. 



ZUBENELY, or y8 LIBRA. A star of 

 the second magnitude, in Libra. 



ZUBENESCH, or a LIBRA. A star 

 of the second magnitude, in Libra. 



ZUBERNICH MELI. A star of the 

 second magnitude in the constellation 

 Libra. 



ZUMIC ACID {Cv^xr\, leaven). An 

 acid discovered in vegetable substances 

 which have undergone the acetous fer- 

 mentation. It has been shown to re- 

 semble closely the lactic acid. 



ZUMO'METER {^vixt], leaven, fxerpov, 

 a measure). Zumosimeter. An instru- 



ment for measuring the degree to which 

 fermentation has proceeded in ferment- 

 ing liquors. 



ZU'NDERERZ. Tinder ore; an ore 

 of silver, occurring in the Hartz, in 

 fibrous flakes resembling tinder. 



ZURLITE. A mineral occurring in 

 rectangular prisms and in botryoidal 

 masses, of an asparagus-green colour. It 

 occurs on Mount Vesuvius with calcare- 

 ous spar. 



ZYGODA'CTYLES (tv-yor, a yoke, 

 dcxKTvXoi, a finger). The name given by 

 Zernminck to an order of climbing birds, 

 including those which have the toes 

 arranged in pairs, two before and two 

 behind, as the parrot, the woodpecker, 

 the toucan, the cuckoo, &c. They cor- 

 respond with the Scansores of Cuvier. 



ZYG^'NIDiE. A tribe of lepidopter- 

 ous insects, named from the typical 

 genus zygcena, and arranged by Linnaeus 

 with the Sphinges on account of the 

 resemblance of their antennae to those of 

 that family. 



ZYGOPHYLLA'CE^. The Bean 

 Caper tribe of dicotyledonous plants. 

 Trees, shrubs, and herbaceous plants, 

 with leaves opposite; flowers polypetal- 

 ous, symmetrical ; stamens hypogynous ; 

 ovarium many-celled ; fruit capsular. 



Z Y'MOME (f^)u»j, leaven). The residue 

 of the gluten of wheat, after it has been 

 treated by alcohol, and has parted with 

 its gliadine and water. It produces vari- 

 ous kinds of fermentation, according to 

 the nature of the substance with which it 

 comes in contact. 



Gilbert & Rivington, Printers, St. John's Sjiuare, London. 



