Add my answer to Exercise 1.30.

Included are the following 4 files:

	Exercise_1.30.pdf
	Exercise_1.30.scm
	Exercise_1.30.tm
	Test_for_Exercise_1.30.scm

I decided to practice designing this iterative procedure by following the way
introduce by Prof. Grimson hoping that next time when I encounter problems like
designing iterative procedure, I will be able to organize my thoughts more
correctly and effeciently.

Thank you!
							Lawrence R. Amlord
							   May 8th, 2013
							   Xi'an, China