¶1Paragraph 3 of the complaint alleges that plaintiff was driving his automobile westerly on Tenth Street, in Wilmington: that defendant was operating his vehicle south on Market Street and that defendant negligently drove his vehicle into plaintiff’s car. The fourth paragraph of the complaint specifies the acts of negligence on defendant’s part and paragraph fifth sets forth the damages incurred.
¶2Defendant’s first defense denies each and every allegation of paragraph three of the complaint except that it admits that defendant was operating his machine on Market Street (not stating the direction). The answer fails to answer any portion of paragraph four and denies all of paragraph five of the complaint.
¶3*426There is a counterclaim charging that defendant was operating his car on Market Street( failing to state the direction), that plaintiff was operating his car on Tenth Street (not stating the direction) and further charging plaintiff with certain specific acts of negligence. The counterclaim concludes with a demand for damages.
¶4One of the allegations of the complaint expressly denied’ by the answer is that plaintiff was operating his machine on Tenth Street. Yet, in his counterclaim defendant states that plaintiff was proceeding on Tenth Street. Either he was or he was not. Had defendant been knocked unconscious as a result of the collision, or otherwise did not know what street plaintiff’s machine was on, he could have answered that he was without knowledge of the fact which would have amounted, in effect, to a denial
¶5 The third defense set up in the answer is as follows: “If the defendant is guilty of negligence, the plaintiff is guilty of contributory negligence”. There is a motion to strike this third defense because it does not particularize the acts of negligence upon which the defense of contributory negligence is based. Defendant contends that in a plea of contributory negligence it is not necessary to relate the acts of negligence upon *427which the plea is premised. I do not agree. Rule 9(b) requiring negligence to be pleaded with particularity is not limited to complaints and in my judgment, the same considerations which demand that the plaintiff set forth the acts of negligence on the part of defendant giving rise to liability on his part, require a like specification of those acts of negligence on plaintiff’s part in support of a defense based upon contributory negligence.
¶6It is my opinion that the acts of negligence supporting a defense of contributory negligence must be affirmatively pleaded. The second motion to strike is also granted.
¶7It would seem, however, that under such unusual circumstances as here supposed, defendant would be under a duty to state why he did not know the fact.
¶8Rule 8(c) of the Rules of the Superior Court requires that certain enumerated defenses, including contributory negligence, be affirmatively pleaded. All Rules herein referred to are the same as the Federal Rules.