MONTREAL (AP) _ Canadian National Railway Co. (CNI) on Tuesday reported first-quarter net income of $724.7 million.On a per-share basis, the Montreal-based company said it had profit of $1.03. Earnings, adjusted for non-recurring costs, came to $1.04 per share. The results did not meet Wall Street expectations. The average estimate of nine analysts surveyed by Zacks Investment Research was for earnings of $1.08 per share. The railroad posted revenue of $2.93 billion in the period, topping Street forecasts.