Today's Class Races.

The captains of the crews met last evening and decided that the courses as previously drawn were impracticable. As now arranged '90 is to pass through the span on the Boston side of the draw of the Harvard Bridge, '91 will be next and both '92 and '89 will go through the next. Up to a late hour last night no rules had been arranged for the government of the race, but they will probably be the same as those of last year which are appended.

The crews will be ready at Brookline bridge promptly at 3 p. m. The stern of eachshell will be held from a boat attached to a rope stretched across the river. As soon as the shells are in position, one long whistle will be blown as a preparatory signal. Twenty seconds after this signal three short sharp whistles will signify "Are you ready?"

The first starting signal (a gun shot) will be given at any moment after the three whistles.

To recall the shells (if necessary) the referee's tug will stop and the second barrel of the gun will be fired, but there can be no signal after ten strokes have been rowed.

The finish line is the imaginary prolongation of the face of the brick wall on the west side of Otter street, Boston. Shells will cross this line between Beacon street and the judges boat, which will bear a flag.

Except as above, the race will be governed throughout by the Laws of Boat Racing as adopted by the National As sociation of Amateur Oarsmen.

Should the weather necessitate postponement, notice will be sent to the college boat house as early as possible.

The officers, as far as appointed, are: Referee, Francis Peabody, Jr.; time keeper, J. G. Lathrop; judge for '90, W. H. Brooks; for '91, H. W. Keyes for '92, W. Alexander.