Chichester Cathedral by deep mouldings. The original spire, which also was of masonry rather than of sheathed wood, was built in the late 14th century, by John Mason (died ca 1403), who also built the Vicars' Hall. The style and construction of the spire are obviously based on that of Salisbury Cathedral but it is not as ambitiously tall, probably because of the problem of subsidence. The Lady chapel, constructed to the east of the retro-choir, is a long narrow space, with large windows in the Decorated Gothic style of the late 13th century. The other buildings related to the cathedral are
Spire (mollusc) the protoconch (also called the nuclear whorls or the larval shell), and most of the subsequent teleoconch whorls (also called the postnuclear whorls), which gradually increase in area as they are formed. Thus the spire in most gastropods is pointed, the tip being known as the "apex". The word "spire" is used, in an analogy to a church spire or rock spire, a high, thin, pinnacle. The "spire angle" is the angle, as seen from the apex, at which a spire increases in area. It is an angle formed by imaginary lines tangent to the spire. Some gastropod shells have