1852.] OF THE ROYAL INSTITUTION. 189 
When the forms of the Individual are independent it becomes 
desirable to have some special name by which we may denote them 
so as to avoid the incessant ambiguity of the two senses of the word 
individual. For these forms the Lecturer some time ago proposed 
the name “ Zéoid.” Thus the Salpa-individual is represented by 
two Zéoids ; the Fluke by three ; the Aphis by nine or eleven, &c. 
The use of this term is of course a mere matter of convenience 
and has nothing to do with the question of Individuality itself. 
PTH. He] 
In the Library were exhibited : — 
Leadbeater’s Cockatoo; and Australian Birds. [Exhibited by 
Messrs. Leadbeaters. } 
Specimens of the Flora of South Africa, recently brought over by 
Mr, P. Wicks. 
Idol in Granite— Clay heads and Figures, from the Pyramids at 
Mexico — Medizval Copper Vase and Spoon — Chinese Compass, 
and Cup, &c.— Specimen of Ancient Papyrus — Handle of Knife, 
in carved wood (from Strawberry-hill)—‘* Eve,” in Roman 
Bronze — Head of a Faun, from Carthage. [Exhibited by Dr. 
W. V. Pettigrew, M.R.I.] 
View of a Mountain Stream, sketched in the Tropics, by P. W. 
Justyne, Esq. 
Greyhounds in Bronze—lInlaid Marble Table from Derbyshire — 
Two Septaria Slabs from the Oxford Clay ——-Two Marble Vases 
copied from the Etruscan— Beautiful Specimen of Gold in Quartz, 
from South Australia (value £70) — Stereoscope with two slides 
of Minerals, by Mr. Tennant. 
Minerals and other Objects, from the Royal Institution Museum. 
Mr. C. Varley exhibited by the Microscope, Embryo Snails, shewing 
the action of the heart, &c., the circulation of the Sap in the 
Nitella, and the Trumpet-shaped animalcules, 
