As there is a prospect of the Scottish Insurance Companies again collecting the statistics of their mortality experience, it is desirable to consider anew the mode in which the facts should be tabulated, in order to ascertain the rate of mortality experienced among assured lives. The previous collection was drawn from theexperience of 10 offices, and consisted of the total lives assured from the beginning of the several offices, brought down to 31 December 1863. Thirty years having elapsed, it is proposed to begin with the facts then existing—tabulating the deaths arising among these; and also to tabulate new assurances, dealing with them separately. It is proposed also to discuss whole-life assurances and endowment assurances. It is also proposed to collect the experience of male and female annuitants. With so large an undertaking in prospect, it is expedient to re-consider the modes previously adopted, and in some detail to state the manner in which these experiences should be now collected.