In the laboratory The electrobalance weighs ticks and mites The science laboratories of the University are a fascinating world of test tubes, animals, apparatus and men. The visitor can find almost anything, from chickens which raise mites to machines which weigh them to devices that extract substances from them. If he looks. Photos by Burt Lancaster Nov. 7 1969 KANSAN 3 and Zoe Medlin This device extracts hormones from insects This chicken raises mites Coffee on a bunson burner