The back part of a shoe upper from shank to heel This may include only the back part below the vamp line, as in a shoe having a three quarters or circular vamp; or it may include the entire back part of the upper from top edge to sole and from shank to heel, as in many types of low cut shoe
Discoloration and staining of paper, usually in the form of small yellow / brown spots This is the result of a chemical reaction within paper which has been bleached during its production Some paper, particularly that of the eighteenth and nineteenth centuries, is more vulnerable
Brown spots in the paper's surface These spots of mildew, penetrating the paper, cannot be removed by erasing but may occasionally by removed by bleaching
Brown spots in the paper's surface These spots of mildew, penetrating the paper, cannot be removed by erasing but may occasionally be removed with bleaching
A spotting effect produced by the growth of molds, usually along the edge of a comic LOOK
rust-colored discoloration caused by microorganisms Fugitive Colors - Stamps with special ink to print some stamps so that they will change, fade or wash out if any attempt is made to tamper with the stamp, postmarks etc
Foxing is a pattern of spotting or speckling on paper or sometimes cloth, usually brown or yellowish brown in tone and often more or less circular in shape It's cause is not fully understood, but generally it is believed a slow process caused by microrganisms, enabled by impurities in the paper and storage conditions that are damp and warm enough to facilitate the process In our Florida climate, it is a common defect: even on quite recent books, some less than ten years old In very recent books it seems to manifest itself first on the edges of the paper, so that when the closed book is viewed, a fine sprinkling of spots of variable density is evident
Discoloration of paper by mildew of micro-organisms, due to dampness or bad preservation
Orange brown spotting caused by a reaction of the decay in the paper with normal moisture A defect of note in plates especially
Freckle-like brownish spots thatdevelope in paper under humid conditions if the paper contains iron particles or fungus or both
Discolouration on paper, generally in the form of random rust coloured spots Believed to be caused by one or more of the following; fungus or mould, impurities in manufacture, high humidity or dampness, airborne acids The removal of foxing is not generally recommended in library and archive preservation since methods of removing foxing almost always will cause further damage to the object
A discoloration of paper characterized by dull rusty spots or patches variously attributed to mold growth or impurities in the paper's manufacture The condition may develop or be accelerated if paper is exposed to extreme light or dampness