duction of the large Lepiditina, or milk bed ovisto. For the present I think bed may well terminate the Salina. The Tentaeculite formation over in- clude beds 3 and 2. Bed 1 goes ascending my old interpre- tation into the Lower Pentamerus. Brown estimate of 95 feet thick in the beds from the Tentaeculite up to the cystoid bed. Just before coming to the shelly cystoid gone there is a bed with Favosites and Cladifera. The latter in great abundance. In the cystoid gone here are picked up several of the characteristic brachiopods. The Lower Pentamerus gone should come in just beneath the cystoid gone but was not able to find it in close association with this gone. However Mr Darby found the bed on the hill lost of the Amicolster road in the