Use "palliation" in a sentence

1. Even with this palliation, when the nuns put on this chemise on the 14th of September, they suffer from fever for three or four days

2. He was anxious, while vindicating himself, to say nothing unkind of the others: but there was only one amongst them whose conduct he could mention without some necessity of defence or palliation

3. There could be no explanation, no palliation of the trick I had played, which would allow me to retire with a resemblance of countenance