It frequently happens that a physician is called in a case of emergency to see the patient of another physician. He should always leave a copy of any prescription he may write and a memorandum of his findings, and instruct that they be given to the other physician when he next calls. This is not only a courtesy due to the other attendant, but justice to the patient, and of advantage to himself. The regular attendant coming in cannot well continue the use of a remedy without knowing what it is, and for him to abruptly discontinue the first physician's treatment subjects the patient to additional expense and may cause an unpleasant impression in the mind of the patient with regard to the treatment started by the first attendant.