... I f MAR(RTfP ERAAID. CORc EXCHAG9s, Monday.May i1, 18it. The arrivals of Wheat for tlhts day's Market were tvery con 'aiderable, and to which was added the left over of a cargo of Fdreign that ciue in last week, of about 1300 Quarters: the supply thus nimplei caused an evident decline in price; viz.- 4s. and 5s. per Qaarter oe fine samples. and more on those of sceoud and inferior ?? and Malt ...