Dow Jones & Co. , New York, said earnings for 1995 rose 8.9%. Net income was $189,572,000, compared to the $178,173,000 earned in 1994. Peter E. Kann, chairman-CEO, called 1995 " another year of solid progress for Dow Jones with earnings rising for the fourth consecutive year. Significantly, this gain was despite a very sharp increase in newsprint prices, strong competition in all areas of our business and our strategic decision to invest heavily in expanding our existing businesses and building new ones." Operating income in 1995 fell 15.1% to $304,041,000. Revenue increased 9.2% to $2.3 billion. DJ's business publishing segment, which includes print publications, television operations and Business Information Services group, had 1995 operating income of $95,509,000, down 39.3% from a year earlier. Revenue increased 9.2% to $1.05 billion. Wall Street Journal advertising linage was flat in the fourth quarter but rose 2.2%, or 2.6% on a per-issue basis, in 1995, DJ said.