(After stating the foregoing facts.) The effect of the testimony was that the last thing either the plaintiff or the defendant remembered was four blocks from the scene of the аccident; at that time the defendant was driving the automobile at a normal and reasonably safe rate of speed and in a safe manner; he was not in any manner under the influence of whisky nor was his driving affected thereby; the street was free from traffic and *181 parked automobiles, and there was no evidence that there were any defects in the street; the defendant was driving on the right side of the street, and neither the plaintiff nor the defendant knew what caused the car to cross the street аnd hit a tree on the left side thereof.
Generally the defendant’s negligence will not be presumed from the mere happening of the accident. In negligence сases the plaintiff has the burden of showing' that the defendant failed to perform a duty owing to the plaintiff. The rule of evidence which is expressed in the maxim res ipsa loquitur is one of the phases of the rule of circumstantial evidence and must be sparingly applied, and then only when the facts and the demands of justice make the аpplication essential; Anderson
v.
McCarthy Drygoods Co.,
'j The effect of the plaintiff’s argument is that the maxim res ipsa 'loquitur may be invoked to make out a prima facie case, irrespective of what degree of negligence the plaintiff is required to establish. If this be correct, the rule in Georgia requiring proof of gross nеgligence in guest cases, which necessarily forbids recovery for ordinary or slight negligence, would be of no effect whatever in many cases where ordinary negligеnce, at most, existed.
Palmer Brick Co.
v.
Chenall,
supra. Thus, the plaintiff by the very paucity of her proof and by her reliance upon this doctrine could circumvent our gross-negligence rule and recover upon a showing of negligence no greater in quantity or effectiveness than'would be necessary if we had adopted the ordinary-negligence rule instead of the gross-negligence rule now in force in this State. Lincoln
v.
Quick, supra. The gross-negligence rule in force in Georgia places the burden on the plaintiff to establish a degree or extent of negligence which can not be met by a mere inference that some
*183
negligence existed even though it be ordinary negligenсe. The ’ rule of res ipsa loquitur applies only where the plaintiff does not know what caused the accident, and the cause, although unexplained, does nоt happen according to the
common
(ordinary) experience of man if due (ordinary) care has been exercised on the part of the defendant, and the gеneral circumstances of the case, thus unexplained, justify the inference of negligence. Lincoln
v.
Quick, supra, 437. "Generally speaking, the maxim res ipsa loquitur is basеd on the relationship of the
ordinary
person (that is an ordinarily prudent person) to the common or
ordinary
experiences of life. 37 Words and Phrases, 336; Breen
v.
N. Y. Cen. &c. R. Co., supra. As respects liability for negligence under the doctrine of res ipsa loquitur for injury inflicted by the driver of an automobile, where
all
the instrumentalities which could likely have caused the injury were under the
exclusive control
and management of the driver, yеt the accident is unexplained, the inferences which can be drawn from the circumstances attendant upon the accident extend only to the “scope of ordinary experiences” (which are the common experiences o'f ordinary men, that is, ordinarily prudent men, under the same or similar circumstances), being coextensive with “the permissible inferences,” are the proper measuring rod by which it can be determined whether the inference or inferences were pеrmissible under the rule of res ipsa loquitur. Negligence under this maxim is a failure to exercise “that degree of care which is exercised by
ordinarily
prudent persons under the same or similar circumstances.” (Italics ours.) Code, § 105-201. Of course proof of ordinary negligence includes the proof of slight , negligence, but proof of ordinary negligence does not include proof of gross negligence which is the higher degree thereof. In this State the plaintiff is required to prove not only negligence but gross negligenсe in a guest case. This very requirement would seem to imply the necessity of proving how the accident occurred, and that certain facts existed which,
in themselves
or of their own natural force,
explain
and make clear
the presence of gross
negligence
as distinguished
from the lower degree of
ordinary
negligenсe. While the rule of evidence expressed in the maxim res ipsa loquitur may be invoked to make out a prima facie case of negli-_ gence, ordinary negligеnce, which includes slight, as the greater j includes the less,_yet iBisTHiufficient in itself to make out a prima .
*184
facie case of gross negligence; and since in Georgia gross negli- >' gence must be established in order for the guest to recover from the host, even if the maxim res ipsa loquitur is applicable under the evidence in the instant casе to make out a prima facie case of ordinary negligence, yet it is not applicable with respect to the amount and degree of such negligence so as to make out a prima facie case of gross negligence, and under the rules of evidence applicable to the instant case no grоss negligence on the part of the defendant was shown. Therefore the judge did not err in sustaining the motion for nonsuit. 9 Blashfield’s Cyc. of Auto. Law,
335
(21), § 6046;
Yearwood
v.
Yearwood,
45
Ga. App.
203 (
In
Capers
v.
Martin,
supra;
Duncan
v.
Ross,
56
Ga. App.
394 (
Judgment affirmed.
