﻿GEOLOGY. 
  233 
  

  

  State, 
  in 
  order 
  that 
  those 
  interested 
  in 
  the 
  matter 
  may 
  

   be 
  induced 
  to 
  introduce 
  them 
  into 
  use 
  here. 
  

  

  Dr. 
  Emmons, 
  who 
  was 
  connected 
  with 
  the 
  agricultural 
  

   department 
  of 
  the 
  New 
  York 
  survey, 
  made 
  analyses, 
  

   several 
  years 
  since, 
  of 
  some 
  of 
  our 
  marls 
  sent 
  him 
  for 
  

   that 
  purpose, 
  and 
  in 
  giving 
  the 
  results 
  in 
  his 
  Quarterly 
  

   Journal 
  of 
  Agriculture, 
  published 
  at 
  Albany, 
  he 
  re- 
  

   marks, 
  "that 
  from 
  these 
  examinations 
  it 
  would 
  appear 
  

   that 
  the 
  South 
  is 
  really 
  rich 
  in 
  fertilizers, 
  and 
  that 
  there 
  

   is 
  no 
  necessity 
  for 
  her 
  lands 
  becoming 
  poor 
  and 
  barren; 
  

   and 
  of 
  one 
  of 
  the 
  specimens 
  analyzed, 
  he 
  adds, 
  that 
  it 
  

   will 
  be 
  found 
  a 
  valuable 
  fertilizer, 
  as 
  it 
  contains 
  almost 
  

   half 
  the 
  amount 
  of 
  potash 
  which 
  the 
  green-sands 
  of 
  

   New 
  Jersey 
  do, 
  that 
  are 
  so 
  remarkable 
  for 
  giving 
  fertility 
  

   to 
  the 
  exhausted 
  lands 
  of 
  that 
  State." 
  

  

  The 
  improvement 
  of 
  the 
  soil 
  produced 
  by 
  the 
  marls 
  

   in 
  New 
  Jersey 
  is 
  said, 
  by 
  Professor 
  Rogers, 
  to 
  be 
  very 
  

   permanent, 
  changing 
  the 
  natural 
  growth 
  from 
  India?! 
  

   and 
  other 
  grasses 
  to 
  white 
  clover. 
  They 
  have 
  been 
  

   very 
  profusely 
  applied 
  in 
  some 
  parts 
  of 
  that 
  State, 
  one 
  

   hundred 
  loads 
  or 
  even 
  more 
  to 
  the 
  acre, 
  being 
  no 
  

   unusual 
  dressing. 
  

  

  The 
  chief 
  value 
  and 
  usefulness 
  of 
  the 
  green-sand 
  is 
  

   ascribed 
  to 
  the 
  potash, 
  which 
  is 
  always 
  present 
  and 
  

   essential 
  in 
  some 
  proportion 
  to 
  its 
  composition. 
  Its 
  

   astonishing 
  potency 
  has 
  been 
  shown 
  by 
  the 
  luxuriant 
  

   harvests 
  derived 
  from 
  fields 
  wholly 
  uncongenial 
  to 
  vege- 
  

   tation, 
  by 
  the 
  aj)plication 
  of 
  sea-heach 
  sand, 
  a 
  substance 
  

   still 
  more 
  arid 
  than 
  the 
  soil 
  itself, 
  but 
  which 
  contained 
  

   a 
  very 
  small 
  proportion 
  of 
  the 
  alkaline 
  granules 
  dis- 
  

   seminated 
  very 
  sparingly 
  through 
  it. 
  

  

  Twenty 
  loads 
  of 
  marl 
  per 
  acre, 
  may 
  be 
  regarded 
  as 
  a 
  

   bountiful 
  dressing, 
  and 
  marling 
  at 
  a 
  cost 
  of 
  five 
  dollars 
  

   per 
  acre 
  has 
  been 
  considered 
  equivalent 
  in 
  its 
  effects 
  to 
  

  

  