Bauhaus-Universität Weimar

Structure of the capillaries.—Capillaries defined,—their size—Form of the capillary 
network. - Vascularity of different parts. Have the minute vessels open mouths? 
Serous vessels; parts in which the existence of blood-vessels is doubtful. Have the 
capillaries membranous'parietes? 2. Circulation in the capillaries.—As viewed by 
the microscope. Degree of resistance offered to, and rate of the blood’s motion in 
the capillaries. The heart’s action the sole moving power. The red particles 
themselves are passive, and are not arrested in the capillaries. Circulation of the 
lymph globules in the capillaries. Vital turgescence. Effects of the application of 
different substances to the capillaries. Their state in inflammation. Influence of 
the nerves on the capillary circulation. Of the veins.—Auxiliaries of the venous 
circulation,—the valves,—the heart. Influence of respiration on the venous circu¬ 
lation. Effects of obstruction to the circulation in the veins. Arterial and venous 
plexuses. Erectile structures, • .... 206-245 
Chap. V,—Of the action of the blood-vessels in the processes of absorption and 
exudation, a. Of absorption.—Proofs of absorption independent of the lymphatics 
and lacteals. Imbibition. Endosmosis. Time required for absorption by imbibi¬ 
tion into the capillaries. Mode of action of poisons. Passage of ingesta into the 
secretions. Matters absorbed must be in solution. The laws of endosmosis modi¬ 
fied in the animal body. Absorption by organic attraction. Absorption aided by 
the action of the heart. Influence of galvanism, of the nerves, and of plethora on 
imbibition. Changes produced by the vessels on the matters absorbed. Cutaneous 
absorption. Interstitial absorption. b. Of exhalation and exudation.—Exudation 
and exhalation from physical causes. The process during life modified by organic 
laws. Exudation of secretions. Sources of the globules of secretions, . 245-265 
SECTION III.—Of the lymph and the lymphatic vessels. 
Chap. I.—Of the lymph.—Physical and chemical properties of lymph. Human 
lymph,—its microscopic characters. Lymph of the frog. Globules of the lymph. 
Colour of lymph and chyle. Globules of the chyle, . . . 265-269 
Chap. II.—Of the mode of origin and structure of the lymphatic vessels.— 
Reticulated and cellular lymphatics. Have the lacteals open mouths? Structure of 
the intestinal villi and of intestinal mucous membrane. The absorbent glands. 
Structure of the absorbent vessels. Communication of the absorbents with the se¬ 
creting canals of glands, and with small veins. Terminations of the absorbents. 
Lymphatic hearts, ....... 269-276 
Chap. III.—Of the functions of the absorbents:—Source of the lymph. 1. Of the 
absorption by the lymphatics and lacteals.—Proofs that these vessels absorb. Pecu¬ 
liarities of the lymphatic and lacteal absorption. Power by which it is effected. 
2. Change effected by the lymphatic and lacteal vessels on their contents.—3. Motion 
of the lymph and chyle.—The moving power. Rate of motion of the lymph and 
chyle, ......... 276—281 
Purely chemical processes. Organic chemical processes—assimilation. 
SECTION I.—Of respiration. 
Chap. I.—Of respiration in general.—The Atmosphere, Respirable and irrespirable 
gases. Aquatic respiration. The respiratory movements. Volume of air respired. 
Necessity of respiration to different animals, .... 281-290 
Chap. II.—Of the respiratory apparatus.—Different forms of the respiratory appara¬ 
tus. In invertebrate animals. In vertebrate animals, . . . 291-294 
Chap. III.—Of the respiration of man and animals.—1. Of respiration in the air.— 
Changes produced in the air,—quantity of carbonic acid generated. Amount of 
oxygen consumed. Changes produced in the proportion of the nitrogen in the air 
by respiration. Respiration of cold-blooded animals. Comparison of the products 
of the respiration of cold and warm blooded animals. 2. Of respiration in the 
water.—Changes produced in the water by the respiration of fishes. Respiration 
of fishes by the skin,—in the air. 3. Of the respiration of the embryo of animals.— 
Respiration of the embryos of birds and insects, and of Mammalia. Blood of the 
foetus. The liquor amnios, ....... 294-301 
Chap. IV.—Of the changes which the blood undergoes in the lungs.—Differences


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