Related Clues:

• That's still enough to make 12across over the North
• It's still there
• Can one be so sure that this was the father of all insects?
• R is still here
• Can one be so positive that that's an insect mother?
• Nitre is stll made here
• One may be positive that that was the very first insect
• One may be positive that this was the first of all the insects
• But still I rent this
• How a 18 down may may positively get to be six feet long
• But still I rent it
• One may be definite that this was the first of all the insects
• First man gets firm over the insect
• Where R is still there (5)
• Can you be positive that the fatherly fellow is in at this?