Possible Clues:

• Institute in old capital set up at the end of day in an easy way
• Flippantly
• In a jaunty manner, first-rate lines written about the Italian
• Cheerfully beginning to invest in first-class transport system
• First-class on railway the Italian boards in a casual manner
• In a jaunty manner
• Without serious consideration
• In a deigning way
• Originally, dropped Long jauntily
• 'I have high hopes for aviation science,' Tom said ___