PHYSIOLOGICAL. 
Gen. Sub. 61 
Senses of insects, and general considerations ; Riley (579). — Relation 
between the movements of eyes and the movements of the head ; hydro- 
kinetic theory of the function of the semi-circular canals of the ear ; 
Crum Brown (77). — Ear-labyrinth, problems concerning; Yohsen (716). 
— Hearing in fishes : that the gold fish hears by its ear is unproved ; it 
reacts to sound-waves by a special skin-sense ; Kreidl (363). — Otocysts of 
My sis, containing calcium fluoride, are experimentally shown to be equili- 
brating, but the animals hear, and an auditory function may also be 
associated with the cyst ; its removal renders them less sensitive ; 
Bethe (40). 
Retina, functions of. Chemical change of a single Schstoff causes 
change of volume, which produces change of pressure ; Weinland (736). 
— Theory of compound vision. Each rhabdome is a perceptive organ 
for a single impression ; Parker (511). — How flowers attract insects; 
Plateau (527). 
Comparative Psychology : — Definitions of instinct ; Lloyd Morgan 
(470). — Instincts of worker ants ; Wasmann (733). — Instinct and experi- 
ence in young birds artificially incubated ; a note confirmatory of Lloyd 
Morgan’s results ; F6r6 (193). — Instinct rather than intelligence in habits 
of spiders ; Wagner (724). — Instinct of animals ; van Yelzen (708). 
— Observations on animal intelligence ; Marco (423). — Gestures in 
animals ; F£r£ (194). — Altruistic impulse in man and animals ; Gavan- 
kscul (239). 
Commensalism and symbiosis : — The life of an animal without Bacteria 
in the alimentary canal; Nuttalt, & Thierfelder (496). — Commensalism 
in Madrepores ; Bouvier (60). — Commonsals in llhiaostoma pulmo i 
Tra churns mediterraneus and Portunus holsatus j De Vescovi (712). — 
Commensalism of a new Lamellibranch ( Scioberetia australis ) and an 
Echinoderm, a viviparous Spatangid ; Bernard (38). — Commensalism of 
Nemerteans with Ascidians and bivalves ; Burger (85). — Symbiosis; 
Bouvier (60). — Symbiosis of A ctinia and Trachichthys ; Strubelt, (679). 
— Myrmecophilous and termitophilous Arthropods ; Wasmann (734). 
Parasites : — Of man and domestic animals ; Sluiter (658). — Some 
peculiarities of parasites ; Braun (68). — Respiration of parasites in 
situations apparently without oxygen, only apparently ; Lataste (378). 
— Parasites of human dwellings, etc. ; Trouessart (698). — Their life and 
its results : a lecture ; Csokor (124). — Account of parasitic diseases ; 
Blanchard (47).— Treatises on parasites of man ; Braun (67), Mercanti 
(438), Sluiter (658). — Parasitic worms of man and domestic animals ; 
Ward (732). — Pseudo-parasites on fossils ; Engel (182a). 
Plants and Animals. 
Relations of plants aud animals ; Wettstein (745).— Cellulose-like 
layer beneath chitinous layer in integument of insects ; Yosseler. 
— Close resemblance of heterotypic mitosis in both plants and animals ; 
