Uses for Fluids--Blood an Unknown Fluid--Harvey Only Reached the Banks of the River of Life--Blood Is Systematically Furnished--Fatality of Ignorance--To Find the Cause Must Be Honest--Following Arteries and Nerves--Feeding the Nerves--The Blood on Its Journey--Powers Necessary to Move Blood--Venous Blood Suspended. USES FOR FLUIDS. If a thousand kinds of fluids exist in our bodies a thousand uses require their help, or they would not appear. Thus to know how and why they help in the economy of life is the study of he who acts only when he knows at what places each must appear, and fill the part and use for which it is designed. If the demand for a substance is absolute its chance to act and answer that call and obey such command must not be hindered while in preparation, nor on its journey to local destination, for by its power all action may depend. Thus blood, albumen, gall, acids, alkalies, oils, brain fluid and other substances formed by associations while in physiological processes of formation must be on time in place and measured abundantly, that the biogenic laws of nature can have full power with time to act, and material in abundance and of kinds to suit. Thus all things else may be in place in ample quantities and fail because the power is withheld and no action for want of brain fluids with its power to vivify all animated nature which have followed any fluid found in the body, and followed it from formation to use and exhaustion step by step until he knows what form a union with one or many kinds. Thus we can do no more than feed and trust the laws of life as nature gives them to man. We must arrange our bodies in such true lines that ample nature can select and associate by its definite measures, weights and choices of kinds, that which can make all fluids needed for our bodily uses, from the crude blood to the active flames of life, as seen when marshalled for the duties of that stands and obey the edicts of the mind of the infinite. BLOOD AN UNKNOWN FLUID.