Related Clues:

• The North gets only this material bit
• Does it make me to keep quiet in the net
• It's for myself to keep mum about the end of 3 down
• How to tell me to keep quiet in the net
• The stuff that only comes at the end
• Tell me to be quiet about what the start of 5 down has
• Thus is the North only synthetic
• It's only to the North that it's not natural
• One gets the thread of this only south of the North
• Is the North only a mixture that's synthetic?
• For the hand of the angler or the leg of the girl
• It's only synthetic next to the North
• The North only makes stuff like this
• It's myself in the net, so shut up
• The North can only produce this synthetically