On the other hand, the bonds of counties, townships, and small cities are usually quite inactive. Transactions rarely occur in them, dealers do not make a market in them, and they can be sold only to genuine investors. It is often impossible to have them even quoted. At first sight, it would appear that active municipal bonds would be much more desirable, but inactive municipals possess a special advantage which the active ones do not enjoy. They possess more stability of market price. It is true that their stability of value is due to the fact that they are not traded in or quoted and is, therefore, largely fictitious, but nevertheless it accomplished a useful purpose. It enables the investor to carry inactive municipals at cost price upon his books through periods in which active market bonds would require to be marked down in conformity with prevailing market prices. No other class of investment except real-estate mortgages possesses to the same degree this quality of price stability. For many classes of buyers--savings-banks, for example--stability of price is a consideration of prime importance. The preservation of the savings-bank's surplus and, indeed, the continued solvency of the institution depend upon maintaining the integrity of the principal which it has invested. A savings-bank requires, also, great safety of principal and interest; _i.e._, the certainty that principal and interest instalments will be paid at maturity. It needs only a fair but not high yield, and it does not need to place emphasis upon convertibility or prospect of appreciation in value. Comparison of these requirements with the characteristics of inactive municipal bonds discloses a striking adaptability on their part to the real needs of the case. As a consequence, it is not surprizing to discover that inactive municipals are greatly sought by savings-banks. The desirability of inactive municipals for savings-bank investment was never more forcibly illustrated than on the first of last January, when the savings-banks came to make up their annual statements. Broadly speaking, there can be no doubt that they were saved by the large quantity of inactive municipals and real-estate mortgages which they carried. Had any considerable portion of their assets consisted of railroad bonds and active municipals, upon which they should have had to write off a loss of ten to fifteen points, their solvency would almost certainly have been impaired.