The science of life : fully illustrated in tone and line and including many diagrams
LEST OF
Chromosomes in the fruit- Bey Drosophila Chromosomes of various " species of Drosophila. :
The effect of inbreeding
Artificial control of development
Some monstrosities due to abnormal development :
The hand: moulding power of use .
Development in action; the seaurchin Why tadpoles turn into frogs
Fallacies of early microscopists ;
Genes that act on the rate of development Disarranging nuclei makes no difference to early development .
How human proportions change dur ing
growth :
Exaggerated local gro owth .
Four dev eloping frogs
Living backwards :
Determination of sex in an insect
How the proportion of the sexes changes with age
Size-classes of sperms
Sex-linked inheritance :
A pedigree of hemophilia—*‘ Bleeder’s s disease,” and method of transmission A Drosophila which no longer looks
like a fly
relations body (soma)
Distortion practised by African tribes : the women of the Sarajingi tribe
Distortion practised by African tribes : the women of the Mangbetu (north-eastern Belgian Congo)
The shaggy musk ox, one of the hairiest, and sand rat, the least hairy of land mammals
Variations, profitable and useless
How selection may gradually change a race
The wild pansy of Europe, Viola tricolor
Straight-line evolution in the sabretoothed cats
A diagram of stellar, geological, and human scales
The sizes of some ultra- -microscopic particles ; all magnified half-amillion diameters
How the outline of the continents would look (A) if the lands rose two hundred metres ; (B) if they sank two hundred metres
Some of the forms into which singlecelled life has evolved
Co-operation of cells
The
of germ-plasm and
ILLUSTRATIONS
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Improvements in the construction of the nervous system
Improvements in the constr uctional plan of animals .
The evolution of segmental limbs
The ascent of life
The life-history of a trilobite
A group of primitive echinoderms from the Paleozoic
An outline of fossil history
Jawless vertebrates from Paleozoic seas
Restorations of some Paleozoic fish
Reconstructions of the earliest known land-plants
Diagram of the evolution of seed and “flower
The mud- -hopper, Periophthalmus
Some Stegocephalians j
The probable distribution of land and sea in the Ice Age :
The evolution of land-vertebrates
Various reptiles which have returned to life in the sea
Two ways in which the flight of birds may have evolved : :
Various kinds of flying reptiles .
Dinosaurs from the Cretaceous .
The Stegosaurus, a vegetarian Dinosaur
Brontosaurus, one of the largest of the Dinosaurs .
The evolution of the placental | mammals during the Cenozoic period
The biggest land-mammal. ‘
Evolution of vertebrate reproduction .
The complications of chewing the cud; a calf’s stomach .
The evolution of man and his upright posture :
Time diagram of the Ice Age and time since its end .
Adaptation to different kinds of diet .
A diagram of the zones of the sea
A submarine animal forest
Some free-swimming larvee of the sea’s surface zone ‘
Adaptations to a floating life :
Parallel evolution towards the bellshape in creatures of the open seas
Deep-sea creatures :
Luminosity in the deep sea
“Telescope eyes ” and other adaptations for seeing in dim light
Life on the muddy floor of the gece sea . :
Adaptation to life in ‘sand .
Fresh-water carnivores
The fresh-water profile
Pond-life at the surface-film
The sizes of organisms—the biggest living things ; : ;
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