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Particulars of the steamer karnak
121 For the Journal of the Franklin Institute.
_Particulars of the ~teamer Karnak. Hull built by Denney & Brothers. Machinery by Tullock & Denhey, Dumbarton, Scotland. Intended service, l~ew York to Havana. Hcr, L.-L e n g t h on d e c k f r o m fore p a r t o f s t e m to a f t e r p a r t of s t e r n p o s t above s p a r deck, B r e a d t h of b e a m ot m i d s h i p section, D e p t h of hold to s p a r deck, " m a i n deck, . F r a m e s 7- L at t h r o a t s , ~ o / c l e d , . . . . sided, " d i s t a n c e a p a r t at c e n t r e s , Keel, . L e n g t h o f e n g i n e a n d boiler s p a c e , D r a f t o f w a t e r at load line, . . below pressure and revolutions, A r e a o f i m m e r s e d m i d s h i p section at this draft, Tonnage, . . 958. C o n t e n t s of b u n k e r s in t o n s of coal, 740. Masts and rig--Barque. ENGINEs.--Vertical direct. D i a m e t e r of c y l i n d e r s , L e n g t h of stroke, . . M a x i m u m p r e s s u r e of s t e a m in p o u n d s , M a x i m u m r e v o l u t i o n s per m i n u t e , BoiLRRs.--Two--Horizontal return tubular.
210 feet. 30 " 10 i n c h e s . 25 " 6 " 18 " 6 " 4~ "
~ ,, 14 " 6 " 80
"
lS " 18 " 4 9 5 sq. feet.
48 inches. 2 feet 3 " 10. 56.
L e n g t h o f boilers, . . Height " exclusive of steam chimney, : N u m b e r o f tubes, 432. Internal diameter of tubes, L e n g t h o f tubes, D i a m e t e r of s m o k e p i p e , . D e s c r i p t i o n of coal, Bituminous.
PROPELLER.Diameter of s c r e w , Pitch of screw, N u m b e r of b l a d e s ,
10 feet 6 i n c h e s . 15 "
6 5
3 " 9~ "
" "
12 19
*~ 6~ "
"
3.
Remarks.~Has wrougl~t iron plate stringers on each deck, and frame ties 2½ × ~ inch ; 12 inches apart in lower hold ; also, five water-tight bulkheads. Carries 626 tons of cargo and 4200 gallons of water in bunks. C. H . H .
Preparation of Calcium. MM. Lies-Bodart and Jobin announce to the Academy of Sciences at Paris, that they had succeeded in preparing calcium in a purely chemical way, by heating the iodide, with potassium in an iron crucible, closed by a cover screwed on air-tight. This mode may be at present conve~ent to chemical professors and students who do not often ~e~ t h ~ me~l, and the fact evolved, .i$~at thiS re-action takes place v,ude~r]ligh pressure, which it ~loes act m~ler the pressure of the ,atmosp]~er~ :may, perhaps lead to results more ; i ~ portant on the ]arg~ scale of i ~ s t ~ y . VoL. X X X V I L - - T m a D SERIESoDNO. 2.DFEBRUARY, 1859.
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_Particulars of the ~teamer Karnak. Hull built by Denney & Brothers. Machinery by Tullock & Denhey, Dumbarton, Scotland. Intended service, l~ew York to Havana. Hcr, L.-L e n g t h on d e c k f r o m fore p a r t o f s t e m to a f t e r p a r t of s t e r n p o s t above s p a r deck, B r e a d t h of b e a m ot m i d s h i p section, D e p t h of hold to s p a r deck, " m a i n deck, . F r a m e s 7- L at t h r o a t s , ~ o / c l e d , . . . . sided, " d i s t a n c e a p a r t at c e n t r e s , Keel, . L e n g t h o f e n g i n e a n d boiler s p a c e , D r a f t o f w a t e r at load line, . . below pressure and revolutions, A r e a o f i m m e r s e d m i d s h i p section at this draft, Tonnage, . . 958. C o n t e n t s of b u n k e r s in t o n s of coal, 740. Masts and rig--Barque. ENGINEs.--Vertical direct. D i a m e t e r of c y l i n d e r s , L e n g t h of stroke, . . M a x i m u m p r e s s u r e of s t e a m in p o u n d s , M a x i m u m r e v o l u t i o n s per m i n u t e , BoiLRRs.--Two--Horizontal return tubular.
210 feet. 30 " 10 i n c h e s . 25 " 6 " 18 " 6 " 4~ "
~ ,, 14 " 6 " 80
"
lS " 18 " 4 9 5 sq. feet.
48 inches. 2 feet 3 " 10. 56.
L e n g t h o f boilers, . . Height " exclusive of steam chimney, : N u m b e r o f tubes, 432. Internal diameter of tubes, L e n g t h o f tubes, D i a m e t e r of s m o k e p i p e , . D e s c r i p t i o n of coal, Bituminous.
PROPELLER.Diameter of s c r e w , Pitch of screw, N u m b e r of b l a d e s ,
10 feet 6 i n c h e s . 15 "
6 5
3 " 9~ "
" "
12 19
*~ 6~ "
"
3.
Remarks.~Has wrougl~t iron plate stringers on each deck, and frame ties 2½ × ~ inch ; 12 inches apart in lower hold ; also, five water-tight bulkheads. Carries 626 tons of cargo and 4200 gallons of water in bunks. C. H . H .
Preparation of Calcium. MM. Lies-Bodart and Jobin announce to the Academy of Sciences at Paris, that they had succeeded in preparing calcium in a purely chemical way, by heating the iodide, with potassium in an iron crucible, closed by a cover screwed on air-tight. This mode may be at present conve~ent to chemical professors and students who do not often ~e~ t h ~ me~l, and the fact evolved, .i$~at thiS re-action takes place v,ude~r]ligh pressure, which it ~loes act m~ler the pressure of the ,atmosp]~er~ :may, perhaps lead to results more ; i ~ portant on the ]arg~ scale of i ~ s t ~ y . VoL. X X X V I L - - T m a D SERIESoDNO. 2.DFEBRUARY, 1859.
11