 Further, he advised the jury that, if their deliberations they considered the discrepancy between the amounts prescribed and the amounts administered as shown in the nurses' notebooks, and wondered if there were a channel by which they were improperly disappearing, they should recall that the drugs were not securely stored and that two of the nurses had lied in the witness box about whether they were securely locked up.He advised the jury that in Mrs Morrell's case there were three essential points to decide