Of the temple ruins of Java, considered generally, Mr. Wallace says, "It will take most persons by surprise to learn that they far surpass those of Central America, perhaps even those of India."[12] Yet it is only recently that these great works have been recovered to the world. A Dutch engineer who was sent to construct a fort at Klaten, in 1797, found that a number of architectural remains existed in the neighbourhood of Brambanan, of which no account had been given. The natives, it appeared, regarded them as the work of some local deity, and, indeed, were in the habit of worshipping one conspicuous statue. He also found much difficulty in sufficiently clearing the ruins of the overgrowth of vegetation, so as to get an adequate view. Eventually he succeeded in making some rough sketches of them. In the year following the English occupation (1812), Colonel Colin MacKenzie visited Brambanan, and made an accurate survey of the ruins in that neighbourhood, which he sketched and described. At the instance of the Governor, Sir Stamford Raffles, Captain Butler was then sent to make drawings of the buildings, and to report upon them. This was the first methodical exploration of the Hindu ruins in Java; but it was only partial, and related almost exclusively to the Brambanan neighbourhood. A quarter of a century later, when the discovery of photography had made an exact reproduction of the sculptures possible, the Dutch Government instituted an exhaustive survey of the Boro-Boedoer temple. In July, 1845, M. Shaefer was commissioned to execute photographs of the bas-reliefs, but he was only partially successful. Two years later, an engineer, M. F. C. Wilsen, was sent out from Holland, and, after giving satisfactory proofs of his skill, definitely appointed in 1849, by a decree of the Council of Netherlands India, to make drawings of the bas-reliefs and statues of this temple. He was assisted by M. Schönburg Mulder. They commenced in April, 1849, and completed the whole of the task they had undertaken in the year 1853. M. Mulder's drawings proved, however, to be useless, and a new assistant, M. Mieling, was appointed. After various troubles, the drawings were finally completed in 1871, and the letterpress and plates published in 1874. This great literary work, consisting of several hundreds of large lithographed plans and drawings of sculptures and statues, with a complete account written by Dr. C. Leemans, director of the Public Museum at Leiden, was produced under the direction of the Dutch Minister of the Colonies. But even this splendid account of the Boro-Boedoer temple is not complete; since the date of its publication a new series of bas-reliefs have been discovered, and are being gradually photographed. In connection with the temples of Brambanan and Kalasan, also, new and interesting discoveries are being made from year to year. Indeed, images and sculptured stones are continually found all over the island. At Gunong Praü, forty miles