Oysters

■About a million bushels of oystoi's are yearly exported from Che3apeake Bay. Oi these, about 600,000 bushels are Bent ia the spring and " plantod " in Northern waters, while 400,000 bushels are exported in the fall and winter, and consumed imrnediately in Northern markets, some of the largest dealers using as many üb 50,000 bushöls yearly. Those oysters plunted in the spring and laken up in the succoeding fall do not increase in numbers, but almost doublé in sizo. - The growth varies som w hut in different eeasons, but usually the same oystera that mensure a bushel in the spring will measuro two io the iall. Thev do uot iocrease in number unless permifcted to lie until the secoud suuimer. - Although the usual milkine&s attending propagalion, and whioh rundera thern unfit ior food during the warm months, is observed the first season, yet the spawn does not assurne aqy perceptible shape u u til tlie second, wheu tho little speeks of oysters are iouud clinging to the shclls of the old ones, or to stones, sticks, and whatever olijects come in contact with them. The espoited oysters are subjectod to many dangers in transjjortation. The pitc-hing of the vossel in a rough sea alíocís them, and ïf the hatohes are loft open in a dense fog, and it pervades the hold containing them, they are killed by il. A thunder storm is also fatal to them, the concussion jurring them in the samo maoxer an does the plungiug of the vessel. - Under favorable circuui-taüues they will live on shipboard from four to six ffeeks.