Covance 3Q Revenues: $597.6 million (+3%)   3Q Earnings: $37.8 million (-7%)   YTD Revenues: $1.8 billion (+6%)   YTD Earnings: $60.8 million (-45%)   Comments: Late-Stage Development revenues grew 7% to $324.1 million, led by an 18% boost in clinical development and central laboratories revenues. Early Development revenues in the quarter fell 8% to $220.7 million, due to declines in toxicology services, research products, and clinical pharmacology, as well as the impact of the sale of environ...