451 



CONTENTS. 



(The figures refer to the folio at the bottom of the page.) 



TABLES FOR COMPARING THE MOST IMPORTANT MEASURES OF LENGTH USED 

 FOR INDICATING ALTITUDES. 



PAGE 



On the Various Standards of Measure, and their Relations ... 7 



Comparison of the Measures of Length most generally used for indicating Altitudes. 



Table T. Conversion of French Toises into Metres . . ..11 



" II. Conversion of French Toises into Paris Feet . . . 14 



" III. Conversion of French Toises into English Feet . . - . la 



" IV. Conversion of French Toises into Rhine Feec . . . 15 



For converting Metres info different Measures. 



V. Conversion of Metres into Toises . . . . . .1(5 



VI. Conversion of Metres into Paris Feet . . . . . 17 



VII. Conversion of Metres into P^njilish Feet 20 



VIII. Conversion of Metres into Rhine or Prussian Feet . . 28 



IX. Conversion of Metres into Feet of Vienna . . . .28 



For converting Paris or French Feet into different Measures. 



X. Conversion of Paris Feet 

 XI. Conversion of Paris Feet 



XIII. Conversion of Paris Feet 



nto Toises ..... 29 

 nto Metres 80 



XII. Conversion of Paris Feet into English Feet ... 31 



nto Rhine Feet .... 32 



XIV. Conversion of Paris Feet into Feet of Vienna ... 33 



For converting English Yards and Fed info different Measures. 



XV. Conversion of English Yards into French Toises . . .34 



XVI. Conversion of English Yards into Metres .... 34 



XVII. Conversion of English Feet into Meti-es 35 



XVIII. Conversion of English Feet into Paris Fef^t ... 36 



XIX. Convfrsion of English Feet into Rhine Feet . . . .37 



XX. Conversion of English Feet into Feet of Vienna ... 38 

 E 5 



