elis
_Quiscalus major_

Raven
Reaumur
_Rhodius anarus_
Romanes
Rook

Saint-Hilaire, G.
St. John, C.
Sand-wasp
Sanitation of dwellings _et seq._
Saussure, H. de
Scarabaeus
Sea-gulls
Secretary-bird
Sentinels
Severn, H. A.
Sewing among birds
Shrike
Simon, Eugene
_Sitaris muralis_
_Sitaris colletis_
Slavery among ants
Smeathman
Snake
Sparrow-hawk
_Sphex_
Spider
Spider-crab
Sponge-crab
Squirrel
_Staphilinus Caesareus_
Stickleback
_Strigops habroptilus_
Sturgeon
Swallow's nest
Sykes
_Sylvia atricapilla_

Tailor-bird
Tennent
Termites
Thomson, J. A.
Tiger-beetle
Titmouse
Toad
Tortoise
_Toxotes jaculator_
Trap-door spider
Tristram
_Troglodytes calvus_
Tschuedi
Tyrant-bird

_Uranoscopus scaber_

_Vespa sylvestris_
Vizcacha
Vole

Wasp
Waterton
Weaver-bird
Wodzicki
Wolves
Woodpecker
Woven dwellings

_Xylocopa violacea_

THE WALTER SCOTT PRESS, NEWCASTLE-ON-TYNE.

The Contemporary Science Series.

EDITED BY HAVELOCK ELLIS.

I. THE EVOLUTION OF SEX. By Professor PATRICK GEDDES and J. ARTHUR
THOMSON. With 90 Illustrations. Second Edition.

"The authors have brought to the task--as indeed their names
guarantee--a wealth of knowledge, a lucid and attractive
method of treatment, and a rich vein of picturesque
language."--_Nature_.

II. ELECTRICITY IN MODERN LIFE. By G. W. DE TUNZELMANN. With 88
Illustrations.

"A clearly-written and connected sketch of what is known about
electricity and magnetism, the more prominent modern
applications, and the principles on which they are
based."--_Saturday Review_.

III. THE ORIGIN OF THE ARYANS. By Dr. ISAAC TAYLOR. Illustrated.
Second Edition.

"Canon Taylor is probably the most encyclopaedic all-round
scholar now living. His new volume on the Origin of the Aryans
is a first-rate example of the excellent account to which he
can turn his exceptionally wide and varied information....
Masterly and exhaustive."--PALL MALL GAZETTE.

IV. PHYSIOGNOMY AND EXPRESSION. By P. MANTEGAZZA. Illustrated.

"Professor Mantegazza is a writer full of life and spirit, and
the natural attractiveness of his subject is not destroyed by
his scientific handling of it."--_Literary World_ (Boston).

V. EVOLUTION AND DISEASE. By J. B. SUTTON, F R.C.S. With