HCA 3rd-Qtr Net Falls, Hurt by Hurricanes  NEW YORK (Reuters) - HCA Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=HCA.N target=/stocks/quickinfo/fullquote"&gt;HCA.N&lt;/A&gt;, the largest U.S.  hospital chain, said on Friday its third-quarter earnings fell,  hurt by hurricanes that hit the southeastern United States  earlier this year, causing disruption and a drop in admissions  at the company's hospitals in Florida.