Blood levels of atropine parallel the Increase in heart rate caused by atropine. The graph shows the difference in time required to achieve an increased heart rate when atropine is taken by mouth. injected with an ordinary syringe and administered with an AtroPen. In view of this. I am pleased EPA has begun to act on this matter with their ban on DDT. however. I would call to the attention of my colleagues two articles detailing the dangers to the public and migrant farmworkers. The first appeared in the New York Times of June 18. 1972. and was written by E. W.