Any type of hard concretion (stone) in the body, but usually found in the gallbladder, pancreas, and kidneys.
Con, Endodermal concretion continued into the tentacuthe hood.
In his Sylva sylvarum (1627), Francis Bacon states that " the original concretion of bitumen is a mixture of a fiery and watery substance," and observes that flame " attracts " the naphtha of Babylon " afar off."
The dried residue largely comprised of olive colored concretion in which bone was rare to occasional, charcoal occasional and vitrified fuel ash rare.
The process carrying the otolith outer side of a or concretion hk, formed by endoderm cells, is tentacle, two enclosed by an upgrowth forming the " vesicle," nerves run round which is not yet quite closed in at the top. the base of the (After Hertwig.) tentacle to it.
The substance called "ambergris," formerly used in medicine and now in perfumery, is a concretion formed in the intestine of this whale, and found floating on the surface of the sea.
This substance, which has been found to be a purely siliceous concretion, is possessed of peculiar optical properties.
Whilst pyrites is found abundantly in the older crystalline rocks and slates, marcasite is more abundant in clays, and has often been formed as a concretion around organic remains.