How many monkeys out if the original shipment did Bill Volt count as dead within one months time?

Twenty-nine of the original one-hundred monkeys died within a month's time.

On November 1, a little less than a month after the shipment of monkeys had arrived, he put in a telephone call to Dan Dalgard, telling him that the monkeys that had recently arrived from the Philippines were dying in unusually large numbers. He had counted twenty-nine deaths out of a shipment of a hundred monkeys.