Horton continues fine Roses form
Paul Horton and Tom Smith's hit half-tons as Lancashire hit their highest total of the season despite five wickets for Yorkshire's Jack Brooks.
This Roses match at Headingley may well be headed for a draw, such is the pessimism about the weather forecast for the last two days.
But that should not detract from the tussle to date, in which opener Horton (66) continued his prolific record against Yorkshire over the years and Smith (54) gave Lancashire substance from number six as they passed 300 for the first time in LV= Division One this summer.
The absence of Ryan Sidebottom, out of the home attack with a sore hamstring having impressed before lunch with some testing but unrewarded swing, put an extra onus on Brooks (five for 90) and Liam Plunkett (four for 74).
While Sidebottom had enforced rest and treatment, the visitors' progress from 87 for two after a truncated day one to 325 all out arguably gave them the marginal edge after being put in on a pitch offering the Yorkshire bowlers hard work as well as occasional reward.
Horton, reprieved on 46 the previous evening when he had been caught off a no-ball, passed his 50 - with eight fours from 143 balls - before leaving one from Brooks that tailed in sufficiently to take the off bail.
Steven Croft went cheaply to Plunkett, who could take only minor credit for a full ball down the leg side which the batsman edged behind.
Plunkett was more deserving when he beat Ashwell Prince's front-foot defence for lbw.
It was Brooks who took over the wicket-taking duties after lunch.
Alex Davies was caught at second slip - and, after Smith and Glen Chapple had taken toll of Adil Rashid with the old ball, Brooks returned with the second new one to shift both the seventh-wicket pair.
He started with Chapple, an inswinger from the Kirkstall Lane end defeating the forward push to bowl the Lancashire captain through the gate and hit middle to end a stand of 68.
Smith had completed his 134-ball 50 with an on-driven four off a lacklustre Tim Bresnan, but Brooks switched directions and immediately got his man.
Smith edged an attempted cut on to the base of his stumps, only for Kyle Hogg to reprise the left-handed resistance.
Often Yorkshire's seamers gave him the opportunity to show off his strength with off-side drives, and he finished unbeaten on 47 as the last two wickets added 58 to bank a third batting point with ease.
Yorkshire then had time - before rain brought a slightly early close - to finish on 29 without loss in an even contest which will, however, probably be robbed by the elements of a satisfactory conclusion.