In addition to the many fine transitions that one observes(71) between the Acheulean and Mousterian industries at St. Acheul, strong evidence is also furnished in favor of a close connection between these cultures by the discoveries at Laussel, on the Vézère, near Les Eyzies. There, broad and deep before this shelter of Laussel, lies the Mousterian layer, and directly beneath it is a true Acheulean layer close to the waters of the valley of the Beune. This proves that in Acheulean times this valley was deepened to the same degree as to-day, and a close union of the Acheulean to the Mousterian is here again evident. In the valley of the Somme near St. Acheul Commont has also observed proofs of a similar close connection between these cultures. With such records in northern and southern France, the Neanderthal race, which is known toward the end of Acheulean times and especially covers the entire period of Mousterian time, comes much nearer to us. If we assign the Mousterian industry to the last glacial period, we give it a duration of some 30,000 years, and this is about the reckoning which thoughtful anatomists have already assigned for the Neanderthal man. SPECIAL MOUSTERIAN IMPLEMENTS Two instruments are especially typical of the Mousterian industry from beginning to end; these are the 'pointe' and the 'racloir.' The former, pointed and spear-shaped, is from 1 to 4 inches in length; the latter is a broad scraper, from 1 to 2 inches in width; and both have the distinctive peculiarity of being composed of a large flake of flint struck off from a larger bulb or nodule and of being retouched only on one side, leaving on the opposite side the smooth conchoidal surface of the flake.(72) This point and scraper are highly characteristic not only of the early stages but of the Mousterian industry throughout its entire course, including even the late La Quina types, and their manner of making is obviously a modified usage of the late Acheulean discovery of the flakes of Levallois. [Illustration: FIG. 128. Typical Mousterian 'points' from the type station of Le Moustier, made of a large flake of flint struck off from the nodule and retouched on only one side, leaving on the opposite side a smooth, conchoidal surface. After Déchelette, by permission of M. A. Picard, Librairie Alphonse Picard et Fils.] A matter of the greatest interest in the industrial development of western Europe at this time is the fact that this discovery of the _utilization of the flake_, whether in the 'lames de Levallois' or in the Mousterian point and scraper, led to the decline of the coup de poing. The retouched flakes of various shapes were easier to make and to repair and served equally well the purposes of skinning and dismembering game which had been previously served by the ancient coup de poing.(73)