In Michigan it has been said that the physician cannot avail himself of the statute for his own benefit; but that was in a case where the communication was not really of the privileged class.[300] In New York, in proceedings to which a physician was a party an examination of his books of account before trial has been refused on the ground of privilege, and for the same reason a motion to direct a physician to turn his books of account over to a receiver has been denied.[301] In Montana it has been said that when the patient consents no one else can object to the reception of the physician’s testimony.[302] In New York it has been said that the benefits of the law are to be dispensed alike to those familiar with and those ignorant of its existence and applicability, and it is therefore no reason to refuse its enforcement, that the patient did not know that his communication was privileged.[303] But, as in other cases of the receipt of improper evidence, it would seem that the objection should be made at the time it is offered, and if the objection is not then made, it will not avail to raise it later or on appeal.[304] It should not be prematurely made.[305] In New York where in pursuance of a special feature of practice in probate proceedings,[306] certain witnesses are regarded as the surrogate’s witnesses though produced at the instance of the contestant, and the contestant, after giving notice that the evidence of physicians as such witnesses was material, refused to examine them, and the surrogate required the proponent to suggest a line of examination, it was held that it did not lie with the contestant to object to the physicians’ testimony as privileged, because she had lost her right to object by giving notice that the evidence of those witnesses on these points was material.[307] Objection cannot be raised in the progress of an examination after the forbidden testimony has been in part received without objection; for that would unjustly enable a party to open the door and get in all he desired and then to close it to the disadvantage of his adversary; when the door is once properly opened the examination may be continued until it is complete, despite the objection of the party at whose instance it was begun.[308] In Indiana, where there was no objection, it was held that the evidence should not be withdrawn from the consideration of the jury or its weight diminished by comments on its value as matter of law.[309] But when such evidence has already been admitted in the face of objection, it is not necessary for the party to object again, as nothing is waived by conforming with a rule already laid down.[310] Where it is apparent that no harm is done to the objecting party by an improper ruling on the receipt of privileged communications, no weight will be given to an exception to such ruling.[311]