All in a day's work

I wanted to share with you guys a direct quote from an email I received from one of the members of the research group out here. This is not the first time one of the members has pluralized the word 'test' with the '-es' suffix. I laugh hard each and every time, without fail. Looking forward to seeing everyone in April in Chicago.

Since we are still waiting for the new sample coming, I'm thinking about why not add two more testes this week. One is for the belt press human waste,and the other for the belt press hog manure which we got oil form.The purpose for the two testes is to vertify if the amount of raw material input have some effect on the oil formation.so what do you think,Kim? any comments,thanks.
shuangning