The absence of bog iron in the neighbourhoods of the Gairloch iron furnaces or bloomeries is quite intelligible; it was no doubt all consumed by the ironworkers. Considerable quantities of bog iron are still to be seen in other parts of Gairloch, and their frequent occurrence throughout the parish confirms the contention that this description of ore formerly existed near the bloomeries, and was used at them. Most bog iron is rich in the useful metal. Mr Macadam has analysed a sample from Golspie, submitted by Dr Joass, and has found it to contain 54½ per cent. of metallic iron. Some Gairloch samples are nearly as rich, as will be seen from the results of Mr Macadam's analyses stated below. The deposits of bog iron are locally called by the descriptive name of "pans." The following is a list of places where these deposits occur within the parish of Gairloch, as so far noticed by Mr Macadam and myself:-- 1. In the churchyard at Sand of Udrigil. 2. At the highest point on the road between Aultbea and Laide. 3. In the village of Cove; masses of bog iron are built into fence walls. 4. Near Meallan na Ghamhna. 5. Near the Inverasdale Board School, where there are three "pans." 6. In the township of Strath of Gairloch; the "pans" have been broken up; they say there were several of them. 7. At the north-west end of the township of Lonmor; here too the "pans" have been broken up, and lumps of bog iron are to be seen in walls or dykes. Mr Macadam has found 51¼ per cent. of metallic iron in a heavy sample from this place. 8. Among the sand hills at the easternmost corner of the farm of Little Sand; one "pan" is entire; another is partly broken up. Mr Macadam's analysis shews 51½ per cent. of metallic iron in a sample from this place. 9. At North Erradale; "pans" broken up. Mr Macadam states that a heavy sample of bog iron from this place yields 49 per cent., and a sandy portion 38¾ per cent. of metallic iron. 10. At South Erradale. There is a fence wall, locally called Garadh Iaruinn, or the "iron dyke," entirely composed (for fifty yards of its length) of masses of bog iron, varying from 3 to 13 inches in thickness, and some of them nearly a yard in length. The dyke was erected in 1845, when the present system of crofts was being established in Gairloch. Quantities of bog iron are also to be seen in other dykes, and the soil of probably about two acres of the adjacent cultivated land mainly consists of comminuted bog iron. There must have been large deposits of it at this place; one or two unbroken masses still remain _in situ_. Mr Macadam finds that the heavier kind yields, on analysis, 50 per cent. of metallic iron, whilst a sandy portion contains 46½ per cent.