Possibly we may yet use the ants or some other clever insects to find out the origin of the fatal parasite which devours the consumptive. Some reason exists for imagining that this parasite has something to do with the flora, for phthisis ceases at a certain altitude, and it is very well known that the floras have a marked line of demarcation. Up to a certain height certain flowers will grow, but not beyond, just as if you had run a separating ditch round the mountain. With the flora the insects cease; whether the germ comes from the vegetation or from the insect that frequents the vegetation does not seem known. Still it would be worth while to make a careful examination of the plant and insect life just at the verge of the line of division. The bacillus may spring from a spore starting from a plant or starting from an insect. Most of England had an Alpine climate probably once, and some Alpine plants and animals have been stranded on the tops of our highest hills and remain there to this day. In those icy times English lungs were probably free of disease. Has formic acid ever been used for experiments on bacilli? It is the ant acid; they are full of it, and it is extracted and used for some purposes abroad. Perhaps its strong odour is repellent to parasites. To return: while the honey-bees live in comparative safety, the more or less solitary wild bees have a great struggle to repel various creatures that would eat them or their young, and, be as watchful as they may, all their efforts at nest-building are often rendered nugatory by the success of a parasite. So it is not worth while to catch them just for the purpose of identification, for they have enough enemies in the field without man and his heartless cabinets. The collector is the most terrible parasite of all. Let them go on with a happy hum, while the tulip opens in the sunshine. THE TIME OF YEAR.