A man exercising with chest weights. In this position, he brings his left leg down to the floor, straight…
A man exercising with chest weights. In this position, he bends over and straightens his body with his…
A man exercising with chest weights. In this position, he has bent over and now straightens his body…
A man exercising with chest weights. In this position, he pulls his arms down and back, alternately…
"The prevailing winds of the globe; with a section of the atmosphere showing its system of permanent…
The image represents the horizontal clock face system. The bottom is the firing line and the numbers…
"Diagram showing types of canal system. --After Korschelt and Heider. The flagellate regions are dark…
"A., a minute portion of the branched excretory system of a Plathelminth, showing longitudinal duct…
"Alimentary system of leech. m., Mouth; cr6., sixth crop-pocket; cr11., last crop-pocket; v., rectum;…
"Nervous system of shore-crab (Carcinus manas). br., The supra-oesophageal mass; g., gullet surrounded…
"Nervous system of bee. A, of larva. B, of adult. a., Antenna; mx., maxilla; m., mandible; w., origin…
"Diagram of circulatory and excretory systems in a Decapod-like Sepia. 1, Gill; 2, renal sac; 3, afferent…
"Proneomenia. Nervous system. e.g., Cerebral ganglia; slg., sublingual; a.p.g., anterior pedal; p.p.g.,…
The respiratory system. Labels: 1. the larynx; 2. the trachea; 3. right bronchia; 4. left bronchia;…
"Diagram of circulation. r.a., Right auricle receiving superior vena cava (s.v.c.) and inferior vena…
"Development of excretory system of vertebrate. The primitive segments are not separated off from the…
"Development of excretory system of vertebrate. The pronephros is completely separated off from the…
"The origin of the mesonephric tubules is seen. They arise from the upper part of the lateral plate,…
"Respiratory system of hag, from ventral surface. b., Barbules; m., mouth opening on ventral surface;…
"Dissection of nerves of skate. CH., Cerebral hemispheres; O.TH., optic thalami; OL., optic lobes; M.,…
"Diagram of Teleostean circulation. A., auricle; V., ventricle; v.a., ventral aorta; a.br., afferent…
"Nervous system of frog. 1-10, The cranial nerves; oc., eyes; crb., in front of optic chiasma; to.,…
"Arterial system of frog. l., Lingual; c., carotid; s., systemic; cu., cutaneous; p., pulmonary; v.,…
"Venous system of frog. m., l., Mandibular and lingual; e.j., external jugular; i.j., internal jugular;…
"Heart and arterial system of pigeon. R.A., right auricle; R.V., right ventricle; L.V., left ventricle;…
"Heart and venous system of pigeon. R.A., Right auricle; R.V., right ventricle; L.V., left ventricle;…
View of the heart with its several chambers exposed and the vessels in connection with them. Labels:…
The digestive system. This figure represents the whole tract of the intestinal canal, not exactly in…
"Bony Tissue. A, portion of cross-section of a bone, the upper portion of the figure representing the…
"Diagram showing arrangement of the nervous matter in Starfish. c, ganglionated ring about the mouth;…
"The nervous system of the Clam,—from the dorsal aspect. a, anterior; o, mouth; c.g., cerebral…
"The central nervous system in a leech. g, dorsal ganglia (brain); g', ventral chain of ganglia; o,…
An illustration of a trade acceptance. "A special form of draft which has been widely used in Europe…
"Diagram of a cross-section of the spinal cord through the roots of spinal nerves. c, central canal;…
"Diagram of the principal vessels in the circulation of a Fish, lateral view. a, aorta; au., auricle;…
"Diagram of the female genital organs of a Bird. c, cloaca; i, intestine; k, kidney; o, ovary with ova…
"Diagram of the urino-genital organs of a male Bird. ad., adrenal body; c, cloaca; i, intestine; k,…
The sexual system of a plant, here having five stamens and one pistil, Pentandria.
The sexual system of a plant, here having six stamens and one pistil, Hexandria.
The sexual system of a plant, here having many stamens with a pistil in the center, Polyandria.
The sexual system of a plant, here having four stamens of unequal length, Didynamia.
The sexual system of a plant, here having six stamens (four longer), Tetradinamia.
The sexual system of a plant, here having stamens united in a tube, Monadelphia.
The sexual system of a plant, here having stamens united in two bundles, Diadelphia.
The sexual system of a plant, here having stamens united in three or more bundles, Polyadelphia.
The sexual system of a plant, here having stamens united by anthers, Syngenesia.