The scientist tells us that every drop of water, fresh or salt, and every portion of the air we breathe, teems with living organisms. The phosphorescence of the sea is due to infusoria; so also is the luminosity of footprints on boggy ground. I have often noticed this last phenomenon when walking behind another man across wet moorland on a dark night, his footprints being plainly defined by a lambent glow of light. There can be little doubt but that the notion of the "will o' the wisp" had its origin in something of this kind.

A few remarks seem to be required with regard to the forms of organic life in the wide region between the birds and beasts on the one hand, and those minute organisms on the other hand.

The reptiles of Gairloch are snakes, slow-worms, lizards, frogs, and toads; the two latter common, the others rarely seen. I have not met with or heard of any adders in Gairloch. It is said that frogs and toads were formerly unknown here, as they still are in the Lews.

The only fish that live in fresh water in Gairloch are trout, pike, eels, and char. Salmon and bull-trout, sea-trout, and finnocks divide their time between fresh water and salt water. Remarks on these fish will be found in [Part IV.], as also some notes on salt-water fish.

There are many shells to be found in both salt and fresh water, all inhabited or recently inhabited by creatures allied to the fishy creation. The fresh-water mussel is found in most of the burns and rivers, and yields a few small pearls to those who undergo the labour of gathering, opening, and examining a vast number of shells. The promiscuous gathering of these mussels in Gairloch has almost exterminated them. Oysters, clams, and cockles have also been nearly exterminated, and are now protected, though still much poached.

The spout-fish, whose long angular shell—sometimes nine inches in length—is popularly called the razor-shell, is abundant on all sandy beaches in Gairloch. It is commonly used for bait at the spring cod fishing. It is not easily captured. The following is Dr Mackenzie's account, slightly abridged, of the mode in which the fish can be taken:—"Go to the sands at the ebb of a spring tide,—always at Gairloch between twelve and two p.m.,—armed with a small spud and fishing-basket. Walking backwards close to the edge of the sea, up flies a spout of water from an inch-wide hole in the wet sand, which instantly fills it up. Experienced spout-fish catchers in a second have the spud slanted into the sand a few inches nearer themselves than where the spout-hole was seen, pushing down till something stops it. Then they carefully remove the sand above the spud, and uncover the top of the spout-fish. Do not touch the top of the shell, or you may draw blood. Scoop the sand away at the side till finger and thumb are able to grip the shell, and basket it. Take care you do not pull violently, or the shell may come up without the fish. By repeating this process you may, if skilled and fortunate, secure a nice basket of spout-fish. The fish, when properly cleared from sand, make the best of stock for a rich soup which has peculiarly nutritive qualities."

Sea anemones are abundant on the Gairloch coast. I understand there are some rare varieties. Will any reader who is knowing about these beautiful things make us a catalogue of them?

The love of flowers and plants is older than the appreciation of fine scenery, if we may judge by the poetry of bygone days. Surely the man, woman, or child who takes no pleasure in the jewels of the vegetable world is greatly to be pitied. It is sad to find how the introduction of sheep has diminished the number and variety of Gairloch flowers. Rocky places, and flat ground near the sea-shore, are commended to the wandering botanist as localities where good plants may still be found. Any person who would add to the list given further on of Gairloch plants would deserve our gratitude. The true lover of flowers will surely abstain from rooting up anything rare that may be discovered.

Besides what are commonly known as flowering plants, there are numbers of other forms of vegetable life, including the grasses, mosses, lichens, seaweeds, fresh-water weeds, and fungi. Complete lists of all these are wanted.

Of the grasses, the most noticeable is that species of bent-grass which so abounds on all the moorlands and hill sides, mingling with the heather, ferns, and flowers. It is this grass which, with its orange tinge of colour in autumn, gives to hills and moors a rich deep colour like old gold.