The picture of the sub-Post Office at Cribbs Causeway, five miles from Bristol, may give our readers who are "in cities pent" an idea of a delightful place for the sale of postage stamps and postal orders and the distribution of letters. This unique Post Office has few houses anywhere near it, but it serves a large, albeit very sparsely populated, area. Some of its interest rests in the fact that it was formerly the half-way inn on the once important highway from Bristol to New Passage, for the ferry over the Severn into South Wales. Some of our elderly readers may probably recollect it as the stopping stage of the coaches which ran prior to the introduction of the railway system. The sub-Post Office, which stands on high ground, is held by two sisters, who went to it as a health resort from a farm in the low-lying Severn marsh. They act as postwomen, and brisk exercise and the early morning dew has brought such roses to their cheeks as would be envied by their Post Office sisters whose fate it is to reside in smoke-begrimed regions. [Illustration: CRIBBS CAUSEWAY POST OFFICE.] Although some of the Bristol district villages are situated at a long distance from town and remote from main roads, yet only one of the Post Offices presents the primitive condition of having a thatched roof. None of the rural postmen now avail themselves on their journeys of the services of that faithful creature, the donkey; but the last animal so used was on the road until 1890, when its master, poor Sims, the Congresbury to Shipham postman, shuffled off this mortal coil. Times change, and our manners change with them; so also do our tests for gold coins. At the Wrington Post Office there are brass testing weights, for sovereigns and half-sovereigns, inscribed "Royal Mint, 1843," such as have not been observed by the writer at any other Post Office, either in the Bristol district or in London. A certain sub-postmistress in the district has for many years been in the habit of keeping her sheets of reserve postage stamps in a large Family Bible. Not that she is irreverent--indeed, she is a pious woman,--but, being a lone widow, she has kept them in that manner for safety, as she imagines that no burglar would look for them in such a depository. [Illustration: MR. EDWARD BIDDLE. (_Sub-Postmaster of Rudgeway._) _Photographed by Mr. Protheroe, Narrow Wine Street, Bristol, from an oil painting._]