The following specimen specification for the supply of stone either unbroken or broken may be of use. _Specification for the Supply of Road Metal._ (1.) The road metal must at all times be clean and free from clay or other dirt, and fully equal to the sample; if required to be broken, each cube must have a square face and sharp edges, and pass all ways through a 2¹⁄₂ inch ring. (2.) The metal must be delivered in (_name of town_) free of all charge to the corporation, either at a railway station or at one of the depôts of the corporation, at the option of the contractor, such option to be declared in the tender. (3.) The metal must be supplied on the order of the borough engineer in such quantities as he may specify, and must be delivered within the time specified in the order. The contractor shall not be required to supply and deliver more than    tons in any one week; but the corporation will be at all times ready to take the metal in larger quantities. (4.) The bill of lading or railway invoice shall be taken as _primâ facie_ evidence of the weight of metal supplied; but the corporation retain the right to test the accuracy of such bill of lading or railway invoice, by passing the metal over a weighbridge as it is received. (5.) Metal delivered at a depôt by carts shall be measured when broken and paid for at the rate of    cwt. per cubic yard. (6.) The corporation retain the right to reject all metal which shall not be equal to the sample, or at their option to pay a reduced price according to its value. (7.) Quarterly payments will be made by the corporation on the certificate of the borough engineer, and within one month from the date of such certificate. (8.) The borough engineer shall be the sole judge as to the fitness of the metal supplied, and his certificate, in writing, shall be conclusive evidence upon the point as between the corporation and the contractor. (9.) If the contractor shall make default in the supply and delivery of road metal in accordance with the terms of this specification, and within the time specified for the purpose in the order of the borough engineer, the corporation shall be at liberty to obtain such road metal as they may deem fit and necessary from another source, and any excess in price or other loss they may consequently incur, shall be recoverable by them from the contractor as liquidated and ascertained damages. (10.) Tenders must be sent in only on the prescribed form, and the person tendering must insert in his tender the name of two persons who will join him in a joint and several bond to the corporation in the sum of   _l._ for the due performance of the contract.