orological observations, it is please address the inventor, William Salisbury, at DURABILITY OF AMERICAN SHIPS. Wheeling, Va. very important to ascertain the proportion of aqueous In connection with this subject, we have received a. vapor in the atmosphere at stated pamphlet from Mr. Donald McKay,… … in dex and a dial plate, to indicate one. Of the age of our war vessels 9 line-of-battle ships average 38} years; 5 frigates PHILADELPHIA-BUILT WAR STEAMERS. its degree of torsion as that varies with the dampness of have been in service for 2G years; 19 sloops 22; 4 The Philadelphia people claim to…
