68 BULLETIN 127, UNITED STATES NATIONAL MUSEUM. 



on the upper deck are beds for two 30-poiind Parrotts, making one 

 jDivot 11 inch, or two 10 inch; four broadside, 8 or 9 inch; four 

 32 or 24 pound howitzers on gun deck; two light chase guns on 

 upper deck. She has two 62^ by 30 inch cylinders: •' ;ur tubular 

 boilers; propeller of brass, 13^ feet in diameter and -3-foot pitch. 

 The motive power, boilers, etc., were imported from Scotland at- 

 a ver}^ large cost." (From letter of R. B. Forbes.) 

 Gift of D. J. Lawlor. Cat. No. 76,045 U.S.N.M. 



Block model of steam tugboat. 



The steam screw tug Atlantic^ of the United States Quartermaster's 

 Department, was built from this model at Boston. Mass., in 1873, and 

 was used about New York harbor by Gen. W. S. Hancock. United 

 States Army. She was designed by D. J. Lawlor, Chelsea, Mass. 



A wooden, carvel-built, single-screw steamer, with long, sharp bow ; 

 \Q.vj hollow at and below water line ; moderate rise to floor, which is 

 slightly concave ; rather deep, quick bilge ; tumble-in top sides ; lean 

 run; long, overhanging round stern; very strong sheer. The water 

 lines are on the " wave " principle, while the section lines have an 

 easy curve from bow to end of counter. 



Dimensions of vessel. — Length over all, 78 feet 3 inches; beam, 

 18 feet ; depth, 9 feet ; draft, loaded. 8 feet 9 inches. Scale of model, 

 one-half inch equals 1 foot. 

 Gift of D. J. Lawlor. Cat. No. 76,043 U.S.N.M. 



Block model of steam launch. 



Long sharp bow ; rising floor ; fine easy run : good sheer. 



Dimensions of launch. — Length over all, 36 feet ; beam, 9 feet 6 

 inches; depth, molded, 5 feet, 1^ inches. Scale of model one-half 

 inch equals 1 foot. " Cat. No. 160,130 U.S.N.M. 



Model of steamship. 



The Philadelphia was built by James and George Thompson, 

 Clydebank, Glasgow, Scotland, and entered service in 1889 under the 

 British flag, under the name of Paris. She was purchased in 1892 

 by the International Mercantile Marine Co., transferred to the Ameri- 

 can flag and renamed the Philadelphia. During the Spanish- Ameri- 

 can War the Paris, renamed the Yale, was used by the United States 

 Government as an auxiliary cruiser, at a cost of $2,000 a day. In 

 1916 the Philadelphia ran between New York and Liverpool. 



This is a twin-screw, triple-blade steamer with sharp bow and little 

 rake; square bilge amidship; round overhanging stern; propeller 

 shafts stream-lined to act as fins; gradual run; stem vertical. She 

 has a main deck and hurricane deck, the latter having two small deck 

 houses amidship and forward. A pilot house and bridge are over the 

 hurricane deck. 



