Note attached, "Possibly a thermogradient cabinet for seed germination (possibly Joan Mullet) see John Delpratt," and by Peter May, "I'm not certain on either count. A friend of mine worked at seed testing in the early 70's and knew Joan M. Would you mind if I sent the photo to him to have look at?"Black and white photograph. Woman working in seed testing, Unable to definitely identify.seed testing, thermogradient cabinet, seed germination, joan mullet, plant research laboratory/institute