The sexual system of a plant, here having stamens united with the pistil, Gynandria.
The sexual system of a plant, here having stamens and pistils in two different flowers of the same plant,…
The sexual system of a plant, here having stamens and pistils on two different plants, Dioecia.
The sexual system of a plant, here having both hermaphrodite and unisexual flowers on the same plant,…
The sexual system of a plant, here having hidden reproductive organs, Cryptogamia.
"Vertical section of a fresh-water sponge (Spongilla), showing the arrangement of the canal-system.…
"Asterias rubens. Digestive system. an, anus; card. st, cardiac division of the stomach; int. caec,…
"Ambulacral system of a starfish. a, ampullae; ap, Polian vesicles; c, circular canal; m, madreporite;…
"Nervous system of Astacus fluviatilis. bg, sub-oesphageal ganglion; cs, commissural ganglion; g, brain;…
"Periplaneta. View of the arrangement of the principal trunks of the tracheal system." -Parker, 1900
"Periplaneta. General view of the nervous system. abd. 6, sixth abdominal ganglion; ant, antennary nerve;…
"Sepia officinalis, enteric canal. a, anus; b. d, one of the bile ducts; b. m, buccal mass; c, caecum;…
"Heart of monitor (Varanus) dissected to show the cavity of the ventricle and the vessels leading out…
"A, heart of the pigeon, dorsal aspect. a. ao, arch of aorta; br. a, brachial artery; br. v, bachial…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes labeled…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with increments from -5 to 5…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and increments…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with increments from -5 to 5…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and odd…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with odd increments from -5…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with the axes and some increments…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with some increments from -5…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with the axes and some increments…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with some increments at -5 to…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and even…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with even increments from -5…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes labeled…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with increments from -10 To…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and increments…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with increments from -10 To…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and some…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with some increments from -10…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and increments…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with increments from -10 To…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with axes and some increments…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with some increments from -10…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and even…
Illustration of an xy grid/graph. It is the Cartesian coordinate system with even increments from -10…
Illustration of an xy grid/graph. It is the Cartesian coordinate system. Neither axis is labeled.
Illustration of an xy grid/graph. It is the Cartesian coordinate system with both axes labeled.
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with increments…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with increments…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with odd…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with some…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with some…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with even…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with increments…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with increments…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with some…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…
Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with increments…