Often as the method of estimating the liabilities of life assurance companies has been discussed by the Institute, there seem to me to be some reasons why it will not be entirely useless to devote another evening to the subject. The Act of 1870 has now been sufficiently long in force that, with one or two exceptions, all the existing companies have furnished the particulars required by the 5th and 6th schedules, which give, in considerable detail, the methods and results of their valuations. A tolerably minute examination of these documents, as they have from time to time appeared, has satisfied me that much difference of practice still exists even among those who would consider themselves in agreement on the main principles; and the 105th number of the Journal contains a paper by Mr. McCandlish, which, being an address ex cathedrâ to the Edinburgh students from the President of the Actuarial Society, may have an authority to which, as it seems to me, some of its doctrines are hardly entitled, and which therefore should not pass altogether unchallenged.