MISCELLANEOUS TABLES FOR REFERENCE, 



373 



may calculate that the charge of electric- 

 ity is six and a half miles off. 



In one second of time in one beat of 

 the pendulum of a clock light travels 

 over 192,000 miles. Were a cannon ball 

 shot toward the sun, and it were to main- 

 tain full speed, it would be twenty years 

 in reaching it and yet light travels 

 through this space in seven or eight min- 

 utes. 



Oceans. Seas, Bays and Lakes. 

 Oceans. Sq. Miles. 



Pacific, about 80,000,000 



Atlantic, " 40,000,000 



Indian, " 20,000,000 



Southern, " ....10,000,000 



Arctic, " 5,000,000 



NOT*. The sets, haya, gulf a, etc., connected with 

 each ocean, are included in the fore^oinir estimate. It 

 may he proper to remark, however, that the exact 

 superficial extent of the several oceans is not known 

 with certainty, nor the exact proportion of laud and 

 water. 



Seas. Length in Miles. 



Mediterranean, about 2,000 



Caribbean " 1,800 



China " ....1,700 



Had " 1,400 



Japan " 1,000 



Black " 932 



Caspian " 640 



Baltic " 600 



Okhotsk " 600 



White " 450 



Aral " 2CO 



Bays. Length in Milr-v 



n's, about 1,200 



:i's, " 600 



ipeake, " 250 



Length. Width. 



EM 



i ,r 380 I'JO 



Baikal 360 35 



Michigan 330 M 



Slave 300 45 



250 '.<) 



Winnipeg 240 40 



L'7<> 50 



Athabasca ..'JOO 



.180 40 



Maracayho 1M 



Great Bear ... 40 



.... :. r . 



i -'. 



- 



Lake 



f><> 



Constance 



- 

 George 86, 



Value of Foreign Money. 



Pound Sterling, of England $4.84 



Sovereign, " 4.84 



Guinea, " 5.05 



Crown, " 1.21 



Shilling, " 22 



Louis d'Or, of France 4.52 



Napoleon, " 3.84 



Five Francs, " 93 



Franc, " 18J 



Frederic d'Or, of Prussia 3.95 



Thaler, of Prussia, Saxony, etc 68 



Florin, of Prussia, Netherlands, etc. .40 



Ducat of Austria 2.28 



Rix Dollar, " 97 



Guilder, " 48 



Doubloon, of Spain (1800) 15.54 



Pistareen, " 19fc 



Real, " 05" 



Five Rubles, of Russia 3.95 



Ruble, 75 



Johannes, of Brazil 17.04 



Moidore, " 6.56 



Franc, of Belgium 18 



Ducat, of Bavaria 2.27~ 



Ryder, of Holland 6.04 



Marc Banco, of Hamburg 35 



Franc, of Switzerland 18 



Rix Dollar, of Saxony 69 



Ducat, of Naples 80 



Scudo of Rome 1 .00 



Lira, of Lombardy 16 



Crown, of Tuscany 1.05 



Livre, of Genoa 18 



Pezzo, of Leghorn 91 



Lira, of Sardinia 18^ 



Milrea, of Portugal 1.12 



Two Rigsdaler, of Denmark 1.11 



Doubloon, of Mexico 15.53 



Tale, of China 1.48 



Rupee, of India \\\ 



Ecu, of Egypt 1.10 



It zebu, of Japan 



How to Make a Barometer or Weather-Glass. 



Take a long narrow bottle, such aa an 

 old fashioned Eau-de-Cologne bottle, and 



put into it two and a half drachms 

 phor and eleven drachms of spir. 

 wine ; when the camphor is dis 

 which it will readily do ly alight agitation, 

 add the following mixture : Take water, 

 nine drachma ; nitrate of potash (saltpe- 

 tre), thirty-tight grains ; muriate of am- 

 monia (mil ammoniac) thirty-eight graiim. 

 Dissolve these salts in the water prior to 

 mixing with the camphorated spirit ; then 



