In this film's first part, newspaper headlines talk of diptheria (sic). Must be the same ones who spell "opthalmology" (sic). The etymology of both words comes from Greek which confirms an "h" which is missing in both misspellings. Properly spelled, they are "diphtheria" and "ophthalmology."
When Rhineland Chemical is shipping boxes of 606 to cities around the world, one box is labeled "St. Mary's Hospital, Sidney, Australia." A second box to a different hospital shows the city correctly spelled as Sydney.