The kazab [kashbu] is mentioned as an ordinary measure of time in more than one passage. The distance from the mainland to an island in the Persian Gulf is said to be a voyage of thirty kazabs [kashbu] (Botta, 41. 48), just as that from Cyprus to Syria is said to be one of seven days (Botta, 38. 41). Also, in Rawlinson, 42. 13, Sennacherib speaks of slaughtering his enemies for the space of a journey or march of two kazabs [kashbu]. This use of the word seems to me a positive proof that the clepsydræ was in use among the Assyrians and Babylonians generally, and was not confined to the astronomers.
There does not appear to me any reason to suppose that a division of the day from sunrise to sunset into twelve hours, varying in length according to the season of the year, and again of the night, from sunset to sunrise into twelve similar hours, was ever known to the Babylonians. Such a division was in use among the Egyptians, and was adopted from them by the Greeks, but the Babylonians and Assyrians knew nothing of it. I may here observe that some modern writers have committed a strange mistake in supposing the clepsydræ to have been invented so late as the third century before Christ and at Alexandria. These writers have confounded two totally different things; viz., the original invention of the clepsydræ marking mean solar time, which goes back to remote antiquity, and is almost certainly due to the Babylonians, and the adaptation of the clepsydræ to the seasonable (καιρικαὶ) hours of the Egyptians and Greeks, which was accomplished at the time and place which these writers mention. I have met with no subdivisions of the kazab [kashbu], and I much doubt whether the Babylonians had any means of marking such.f
ASSYRIAN SCIENCE
The exact sciences were cultivated in Assyria from the earliest times, nor had natural sciences been neglected. Zoology, botany, mineralogy are largely represented in the library of Nineveh, and as all these tablets contain a Sumerian as well as the equivalent Assyrian text, we are justified in believing that the Ninevites, in this respect, still followed the traditions of their predecessors.
We find lists of animals arranged in a certain order which indicates an attempt at classification; thus the dog, lion, and wolf are in the same category, whilst the ox, sheep, and goat form another. In the enumeration of the different animals, there is a very evident design of establishing genera and families, and of distinguishing species. Thus we have a family comprising the great Carnivora: the dog, lion, and wolf; then we have different species in the dog family—such as the dog itself, the domestic dog, the coursing dog, the small dog, the dog of Elam, etc. The scientific side of this classification is revealed by an easily recognised circumstance; thus one finds after the common name a special nomenclature, which belongs to a scientific classification with which the Assyrians seem to have been familiar.
Among the birds similar attempts at classification are evident. Birds of rapid flight, sea-birds, or marsh birds are differentiated. Insects form a very numerous class; we see an entire family whose species are differentiated according as they attack plants, animals, clothing, or wood. Vegetables seem to be classified according to their usefulness, or the service that industry can make of them. One tablet enumerates the uses to which wood can be put, according to its adaptability, for the timber-work of palaces, the construction of vessels, the making of carts, implements of husbandry, or even furniture. Minerals occupy a long series in these tablets. They are classed according to their qualities, gold and silver forming a division apart; precious stones form still another, but there is nothing to indicate on what basis a classification would be established.
If we pass from the natural sciences to geography, we find the latter in a synthetic and fairly confused state. Nevertheless several lists give us a series of the names of towns, rivers, and mountains, arranged according to their geographical disposition, as we can easily prove. Sometimes the data are of a practical character, and names are followed by mention of natural or industrial products of localities, their revenue taxes, or tributes. But the science, par excellence, which was especially cultivated in Assyria, and which the learned men of Asshurbanapal connected with the greatest care with antique Chaldean traditions, was astronomy.
This science was not indeed born at Nineveh; the Greeks teach us that astronomical observations were first made in lower Chaldea 1903 years before Alexander, and consequently 2226 years before Christ. Whatever the value of this date may be, the tradition of this origin is found in the works of the Assyrians, who constantly refer to the observations of their predecessors. Asshurbanapal had sent these learned men to the old schools of Mesopotamia, Ur, Sippar, Agade, Babylon; there to imbibe the elements of the science which was the glory of the southern empire. In the seventh century before our era, observations were carried on at Nineveh. At this date the fixed stars had long been distinguished from the planets; the sidereal revolutions, the divisions of the year, the course of the sun in the different constellations of the zodiac, periodic return of eclipses, and even the precession of the equinoxes, had been calculated. These achievements imply long and conscientious observation, a special intelligence to undertake them, and simple methods of rigorous calculation.
We are ignorant as to the nature of the instruments with which the Assyrio-Chaldeans could observe the stars. The chances of error in observations by the naked eye are evidently very great, and errors can only be rectified by multiplied operations and the most minute calculations. It is known that the determining of the periodicity of the moon’s eclipses rests on a knowledge of the cycle of 223 lunations which bring back the same eclipses periodically. It is certain that the Assyrio-Chaldeans must have also known another cycle of 22,325 lunations equalling 1805 tropical years plus 8 days, or 1805 Julian years of 365¼ days; after which the eclipses return with still greater precision in the same order. How long did it take the human mind to observe and understand a sufficient number of lunations so as to combine the data they afforded and deduct the law that Meton formulated and to which he has given his name?
In regard to eclipses of the sun, the cycle is so very much greater that the beginnings of the observations on which the calculations of their periodicity would rest, would take us back to a period which is quite beyond the limits of the historic age. Diogenes Laertius estimates it as 48,863 years. During that time 373 eclipses of the moon and 832 eclipses of the sun had been observed. When they turned their attention to the calculations resulting from these observations the Assyrio-Chaldeans were marvellously helped by their system of notation. Their numerical system lent itself with ease to the most complicated of calculations. We must content ourselves with stating the results. As we were saying a minute ago, the observations were carried on under Asshurbanapal; the king sent astronomers to different points to study celestial phenomena, and the results of their labours were sent him. Here are the terms in which these reports were expressed:
“To the King, my Lord, his humble servant Ishtar-iddin-apal, chief astronomer of the town of Arbela writes this: Peace and happiness to the king my master and may he long prosper.
“On the 29th day, I observed the node of the moon, the clouds obscured the field of observation, and we could not see the moon.
“In the month of Sebat (January) the 1st day during the year Bel-haran-saduya (648 B.C.).”
The result of this mission was not satisfactory. The eclipse had been predicted, but although the state of the atmosphere did not allow of observation, the attesting of this failure proves the care with which every circumstance that could serve to explain the phenomenon was noted. Here is an observation which was entirely successfuclass="underline"
“To the director of observations my Lord, his humble servant Nabu-shum-iddin, Great Astronomer of Nineveh writes this: May Nabu and Marduk be propitious to the director of these observations, my Lord.