Formal or informal writing HELP

"I shook hands with this miracle, and I learned he was the Company's chief accountant, and that all the bookkeeping was done at this station. He had come out for a moment, he said, 'to get a breath of fresh air.' The expression sounded wonderfully odd, with its suggestion of sedentary desk-life. I wouldn't have mentioned the fellow to you at all, only it was from his lips that I first heard the name of the man who is
so indissolubly connected with the memories of that time."

Question

Formal or informal writing HELP 

"I shook hands with this miracle, and I learned he was the Company's chief accountant, and that all the bookkeeping was done at this station. He had come out for a moment, he said, 'to get a breath of fresh air.' The expression sounded wonderfully odd, with its suggestion of sedentary desk-life. I wouldn't have mentioned the fellow to you at all, only it was from his lips that I first heard the name of the man who is
so indissolubly connected with the memories of that time."

shaniehh · Answer

Identify and explain Joseph Conrad's formal or informal writing style in this passage from The Heart of Darkness, citing specific examples from the text.