Although slaves had been sold in the American colonies since at least 1619, slave labor did not come to represent a significant proportion of the labor force in any part of North America until the last quarter of the 17th century. After that time, the numbers of slaves grew exponentially.
A Pharmacologist earns an average salary of $103,686 per year. For the first five to ten years in this position, salary increases sharply, but any additional experience does not have a big effect on pay.
Salary of a Medical Laboratory Scientist. Wages for medical laboratory scientists vary based upon experience and job location. The mean annual salary earned by medical and clinical laboratory technologists was $60,560 as of May 2014, according to the U.S. Bureau of Labor Statistics (www.bls.gov).