Clarified some of the lines of text
diff --git a/system/language/english/form_validation_lang.php b/system/language/english/form_validation_lang.php
index 7ca762d..2d5e504 100644
--- a/system/language/english/form_validation_lang.php
+++ b/system/language/english/form_validation_lang.php
@@ -12,11 +12,11 @@
 $lang['alpha']				= "The %s field may only contain alphabetical characters.";

 $lang['alpha_numeric']		= "The %s field may only contain alpha-numeric characters.";

 $lang['alpha_dash']			= "The %s field may only contain alpha-numeric characters, underscores, and dashes.";

-$lang['numeric']			= "The %s field must contain a number.";

-$lang['is_numeric']			= "The %s field must contain a number.";

+$lang['numeric']			= "The %s field must contain only numbers.";

+$lang['is_numeric']			= "The %s field must contain only numeric characters.";

 $lang['integer']			= "The %s field must contain an integer.";

 $lang['matches']			= "The %s field does not match the %s field.";

-$lang['is_natural']			= "The %s field must contain a number.";

+$lang['is_natural']			= "The %s field must contain only positive numbers.";

 $lang['is_natural_no_zero']	= "The %s field must contain a number greater than zero.";