Letter from Howard Walter Florey to L Colebrook, Glasgow Understands that lanette wax and cod liver oil have continuous watery phase, not an oily one as he thought - penicillin not stable in Unemul - calcium salt an improvement - easier to handle - gives details of Bodenham's successful treatment of two cases - short of penicillin - a lot taken for intramuscular use - sending the sodium salt recovered from urine. 10 August 1942