leaf, at the base of the laminæ, the petiole, or stalk, is furnished with a couple of pouches, divided from each other by the midrib. Into each of these pouches there is an entrance from the lower side of the leaf. I noticed them first in Northern Brazil, in the province of Maranham; and afterwards at Para. Every pouch was occupied by a nest of small black ants; and if the leaf was shaken ever so little, they would rush out and scour all over it in search of the aggressor. I must have tested some hundreds of leaves, and never shook one without the ants coming out, excepting one sickly-looking plant at Para. In many of the pouches I noticed the eggs and young ants, and in some I saw a few dark-colored scale insects or plant lice; but my attention had not been at that time directed to the latter as supplying the ants with food, and I did not examine a sufficient number of pouches to determine whether they were constant occupants of the nests or not; but my experience since with the trumpet trees would lead me to expect that they were. If so, we have an instance of two insects and a plant living together, and all benefited by the companionship. The leaves of the plant are guarded by the ants; the ants are provided with houses by the plant, and food by the scale insects and plant lice; and the latter are effectually protected by the ants in their common habitation.

Amongst the numerous plants that do not provide houses, but attract ants to their leaves and flower buds by means of glands secreting a honeylike liquid, are many orchids, and I think all the species of passion flowers. I had the common red

passion flower growing over the front on my verandah, where it was continually under my notice. It had honey-secreting glands on its young leaves and on the sepals of the flower buds. For two years I noticed that the glands were constantly attended by a small ant, and, night and day, every young leaf and every flower bud had a few on them. They did not sting, but attacked and bit my finger when I touched the plant. I have no doubt that the primary object of these honey-glands was to attract the ants, and keep them about the most tender and vulnerable parts of the plant, to prevent them being injured; and I further believe that one of the principal enemies that they serve to guard against in tropical America is the leaf-cutting ant, as I have noticed that the latter are very much afraid of the small black ants.

On the third year after I had noticed the attendance of the ants on my passion flower, I found that the glands were not so well looked after as before, and soon discovered that a number of scale insects had established themselves on the stems, and that the ants had in a great measure transferred their attentions to them. An ant would stand over a scale insect and stroke it alternately on each side with its antennæ, whereupon every now and then a clear drop of honey would exude from a pore on the back of the scale insect and be imbibed by the ant. Here it was clear that the scale insect was competing successfully with the leaves and sepals for the attendance and protection of the ants, and was successful either through the fluid it furnished being more attractive or more abundant. I have, from these facts, been led to the conclusion that the

use of honey-secreting glands in plants is to attract insects that will protect the flower buds and leaves from being injured by herbivorous insects and mammals; but I do not mean to infer that this is the use of all glands, for many of the small appendicular bodies, called "glands" by botanists, do not secrete honey. The common dog-rose of England is furnished with glands on the stipules, and in other species they are more numerous, until in the wild rose of the northern counties the leaves are thickly edged, and the fruit and sepals covered with stalked glands. I have only observed the wild roses in the north of England, but there I have never seen insects attending the glands. These glands, however, do not secrete honey; but a dark, resinous, sticky liquid, that probably is useful by being distasteful to both insects and mammals.

THE FAMILY OF MICHAEL

S

AROUT1

From the French of EMILE SOUVESTRE

EPTEMBER 15th, Eight O'clock.— This morning, while I was arranging my books, Mother Genevieve came in and brought me the basket of fruit I buy of her every Sunday. For nearly twenty years that I have lived in this

quarter I have dealt in her little fruit shop. Perhaps I should be better served elsewhere, but Mother Genevieve has but little custom; to leave her would do her harm and cause her unnecessary pain. It seems to me that the length of our acquintance has made me incur a sort of tacit obligation to her; my patronage has become her property.

She has put the basket upon my table, and as I wanted her husband, who is a joiner, to add some shelves to my bookcase, she has gone downstairs again immediately to send him to me.

At first I did not notice either her looks or the sound of her voice; but, now that I recall them, it seems to me that she was not as jovial as usual. Can Mother Genevieve be in trouble about anything?

Poor woman! All her best years were subject to such bitter trials that she might think she had received her full share already. Were I to live a hundred years I should never forget the cir1. This is adapted from An Attic Philosopher in Paris.

cumstances which first made her known to me and which obtained her my respect.

It was at the time of my first settling in the faubourg. I had noticed her empty fruit shop, which nobody came into, and being attracted by its forsaken appearance I made my little purchases in it. I have always instinctively preferred the poor shops; there is less choice in them, but it seems to me that my purchase is a sign of sympathy with a brother in poverty. These little dealings are almost always an anchor of hope to those whose very existence is in peril-the only means by which some orphan gains a livelihood. There the aim of the tradesman is not to enrich himself, but to live! The purchase you make of him is more than an exchange -it is a good action.

Mother Genevieve at that time was still young, but had already lost that fresh bloom of youth which suffering causes to wither so soon among the poor. Her husband, a clever joiner, gradually left off working to become, according to the picturesque expression of the workshops, "a worshipper of Saint Monday." The wages of the week, which was always reduced to two or three working days, were completely dedicated by him to the worship of this god of the Barriers, and Genevieve was obliged herself to provide for all the wants of the household.

2

One evening, when I went to make some trifling purchases of her, I heard a sound of quarreling in the back shop. There were the voices of several women, among which I distinguished that of Genevieve, broken by sobs. On looking further in, I

2. The cheap wine shops of Paris are outside the Barriers, to avoid the city tax.