42 



2. To bring Statute measure into Irish, multiply by 

 and divide by 196. 



3. To bring Statute acres into Cunningham, multiply by 

 484 and divide by 625. 



4. To bring Cunningham measure into Statute, multiply 

 by 625 and divide by 484. 



5. To bring Irish measure into Cunningham, multiply by 

 784 and divide by 625. 



6. To bring Cunningham measure into Irish, multiply by 

 625 and divide by 784. 



4. DEDUCED TABLE OF THE MINOR PARTS (AND EQUIVALENTS) OF A 



STATUTE ACRE. 

 Square inches. Square link. 



Six hundred and forty acres, one square mile. 

 V. ON GEOLOGY. 



The connexion between land valuation and geology is 

 intimate. It is the subjacent rock, or subsoil, that gives 

 character to the upper stratum. The surface soil is or- 

 dinarily composed of the materials that lie beneath, mixed 

 with organic matter that has accumulated for ages, from 

 decayed vegetable life and the remains of animals. On 

 the nature of the soil the kind of crops which it is capable 

 of supporting depends. The mineralogical character of a 

 district determines, generally, its agricultural capabilities, 

 which, under equal circumstances, are likely to be pretty 

 similar wherever the same structure of rocks is known to 

 exist. To a valuator engaged in extensive surveys, a 

 good geological map, comprising an area not too exten- 

 sive, would, on this account, be of the utmost service ; if 

 upon a large scale, and accompanied by sections, by study- 

 ing the memoirs relating to it, in connexion with those 



