Possible Clues:

• Government department is involved in new railway?
• Small cars go for service
• Short garments — test out the cloth
• What secret function did Coleridge's frost perform at midnight?
• Truth, for Blair, was one error I’m about to test
• What secret task does Coleridge's frost perform, unhelped by any wind?
• What some women wear going to bash in government department
• Government
• The cloth sample on skimpy garments
• Government department’s test on small cars