Possible Clues:

• Turn of character that's straight and square to hold class
• In mining, a sloping tunnel or shaft
• Tend to be caught between home and occupation
• Slope's in chapter 50 in Trollope's latest
• Lean, slope
• Have tendency or slope
• That's perhaps where nothing comes up for the slope
• Slope incorporated on track
• Slight gradient in cliff-top railway
• In a hundred, this might have some slope to be with 15 across