Main Boring. — Diagram showing Proportion of Calcinm and Magnesium Carlionate at different Depths — continued. ,'i65 



DepCh 

 in feet, 



5feor 



Ffercentage of 

 Number Mdgnesium Depth 

 afCore. Carbonate, in feet. 



842 



(301) ^-7 



(304) 1-06 



(305) 2-9 

 (309) 1-24 



(313) 2-44 



(314) 2,0-44 

 (316) 2,6-33 

 (520) 31-87 

 (325) 35-80 



(335) 38-38 



(341) 39-54 



(343) 39-27 



(348) 41-54 



(351) 40-06 



(355) 41-18 

 (359) 40-44 



(366) 40-04 



(5A.T 41-4 

 (Ll.A.) 39-79 



(16.A.) 40-15 

 (28. A) 36-9 



(34.A) 39-12 

 (5&Aj 39-7 

 (8lA) 40-07 

 ttOaA) 40-0 

 (ISlA) 38-92 



(leaA) 39-75 



(189. A) 39- OO 

 (203.A.) 4-83 



(22qA3 11-4 

 (225.A) 11-73 



Per(ientdgeof 

 Number Magnesium 

 of Core. , Carbonate. 



(225A) 11-73 



■(254.A)28-5 



f26zA.) 2006 

 (293.A) 40-25 



(321.A.) 38-27 

 (339A.) 39-99 



(361.A.) 40-9 

 (324.A.)40-4 



(398.Aj 4014 



(431.A.) 430 



t444J\) 41-0 



(465.A.) 39-32 



(486.A.) 40-8 



(505A) 38-5 



(520. A) 40-56 



(533.A.) 36-9 



{bbb.h 40-1 



(580.A.) 40-58 



(58aA.) 39-4 



(60aA.) 40-4 



(618.A.) 26-63 



(634.A) 39-4 



(647.A) 30-7 



(6ZaA.) 33-94 

 (679.A.) 38-4 



(709.A.) 41-05 



Fig. 23, c. 



Fig. 2.3, D. 



