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every part. If each one takes this care and is also careful to keep the orchard up to the standard cultivation, this malady, which is troubling our orchardists to such an extent at present, will surely fall and soon become a thing of the past.

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INTELLIGENCE IN A SNAIL.

BY W. H. DALL.

SOME

OME time since a relative told me a remarkable story about

a child who had pet snails which recognized her voice and distinguished it from that of others. As such a development of intelligence has not hitherto been reported among mollusks, I was much interested. By the kindness of the lady from whom the story was first heard, and the intervention of Mrs. Lay, wife of Bishop Lay, formerly of Arkansas and now of Maryland, one of the family, who was cognizant of the facts, was reached, and an extract from her letter is appended. I may add that Mrs. Lay speaks in the highest terms of the accuracy and clearheadedness of her correspondent (then and now a resident of Arkansas), and remarks that both she and her sister were remarkable for the ease with which they established friendly and confidential relations with the birds and animals about them. The father of these ladies, whose name I suppress merely because I have not their authority to print it, was chief clerk in the State Department under the secretaryship of Daniel Webster.

The malacologist, familiar with pulmonates, will recognize in the following quotation many facts which indicate the accuracy and unusual powers of observation of the writer. It is probable that the snail was one of the group to which H. albolabris belongs, at all events it was a native of Arkansas and one of the larger species. It would be highly interesting if some of our lady friends would repeat the experiment with different kinds of snails, and determine by additional evidence whether they are capableist. Of recognizing a call or sound; and 2d. Of distinguishing it from other similar calls or sounds; which the snail in question appears to have done.

1 Mr. David De Tarr, of the Zoological Department of the State of New York at Albany, and Mr. A. B. Covert, of Ann Arbor, Mich., were, during a part of the time of the above investigation, associated with me, To Mr. De Tarr may be credited the finding and drawing of the sungoid form figured on Fig. 4.

The lady, after stating that her sister Georgie was, from the age of three years, quite an invalid and remarkable for her power of putting herself en rapport with all living things, continues : “Before she could say more than a few words, she had formed an acquaintance with a toad, which used to come from behind the log where it lived, and sit winking before her in answer to her call, and waddle back when she grew tired and told it to go away. When she was between five and six years of age, I found a snail shell, as I thought, which I gave her to amuse her, on my return from a picnic. The snail soon crawled out, to her delight, and after night disappeared, causing great lamentation. A large, old-fashioned sofa in the front hall was moved in a day or two, and on it we found the snail glued fast; it had crawled down stairs. I took a plant jar of violets and placing the snail in it carried it to her, and sunk a small toy cup even with the soil, filling it with meal. This was because I had read that French people feed snails on meal. The creature soon found it, and we observed it with interest for awhile, as we found it had a mouth which looked pink inside and appeared to us to have tiny teeth also. We grew tired of it, but Georgie's interest never flagged, and she surprised me one day by telling us that her snail knew her and would come to her when she talked to it, but would withdraw into its shell if any one else spoke. This was really so, as I saw her prove to one and another, time after time. At one time she found a number of eggs. To the best of my recollection they resembled mistletoe berries, though much whiter. They hatched, and she had fifteen or twenty little snails which used to assemble round the cup of meal which had to be frequently replenished. The old snail once fell down on to a brick pavement and its shell was fractured and a small piece lost, but Georgie pasted a piece of calico over the hole and it seemed to do very well. What became of the happy family I do not remember, nor can I tell how long my sister had them. I do not know of any more easily kept pet. If there is anything else which I have forgotten, I shall be happy to write further particulars if I can recollect them."

Georgie,” my correspondent adds,“ died about fourteen years ago.”

An observer, who noticed and remembered the pink buccal mass, the lingual teeth and the translucent mistletoe-berry-like eggs, and after such an interval of time could so accurately describe them, is entitled to the fullest credence in otier details of the story, and I have no doubt of its substantial accuracy, in spite of its surprising nature.

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BOTANICAL NOTES FROM TUCSON.

BY JOS. F. JAMES. IT T is not very many years since the Territories of Arizona and

New Mexico were regarded as the most forbidding countries in the world. Every one who went there carried his life in his hand, and if he escaped the fierce Apaches and returned home with his scalp and a whole skin, he was among the favored of mortals. Within the past five years much of this has changed, and the civilization brought about by the advent of railroads and the influx of determined miners, has been remarkable. A sojourn of some weeks in Arizona, gave me an opportunity to see some of the life of that quarter, and in this paper I purpose speaking of some things to be seen and found there.

The city of Tucson is the largest and most important settlement in Arizona. It is essentially Mexican ; settled as long ago as the end of the seventeenth century, it is one of the oldest towns in our country, and from its foundation to the present time, it has continued to be the center of the trade of the Territory. Situated in the midst of the mining regions, it furnishes supplies to mines on the north, east and south, and for the State of Sonora especially, is a depot of supplies. It is estimated that at certain seasons of the year the trade between Tucson and Sonora amounts to as much as a million dollars per month, the imports to the United States consisting of fruits, tobacco and whisky, and the exports of calicoes and other dry goods. These are carried for a distance of 300 or 400 miles on the backs of mules through passes in the mountains, and on account of the extreme duties into Mexico, much smuggling is constantly going on.

The streets of Tucson are narrow and unpaved; many of them are a foot deep in finely powdered dust, and a sudden gust of wind, such as frequently arises, sweeping along the ground, raises a whirling cloud so thick that it is impossible to see across the street. All of the houses are built of “adobe," the Mexican name for sun-dried mud bricks, are generally but one story high, and have flat roofs. This kind of a house, with walls often two feet in thickness, is said to be much cooler in summer and warmer in winter than any other, and the thickness of the walls ought surely to keep out both heat and cold. To keep out the heat, however, is a much more important consideration than the cold, in a climate where the mercury often rises to 120° in the shade, and sometimes to 125°. In the summer the heat is something fearful to think of, but the air is so dry and so pure, that a degree of heat unbearable in our climate, can be easily endured in that one. During the summer many of the people take their cots into the yard, on to the sidewalk, or on the house tops, and sleep with the sky for a roof. In Yuma it is a common sight to see, early in the morning, people getting up and making their toilets in the

1 Custodian Cincinnati Soc. Nat. Hist.

open air.

The bricks of the houses are about twenty inches long, eight inches wide and three inches thick. They are fastened together with a mortar made of earth mixed with water, the sidewalk often being dug up to furnish the principal ingredient. The houses are built in the form of a square or oblong, with a court in the center, thus allowing a free circulation of air and making the house much cooler. The better class have a covered porch, or "remada,” round the court, and here the people sit and work during the day, and sleep during the hot weather.

There are many curious sights to be seen in and about Tucson, curious at least to Eastern eyes, but it is not my intention to speak of them here. During a stay of some six weeks in the city, I collected, the plants of the immediate vicinity, and it is to them I shall refer at present.

The commonest plant of all the country about Tucson is known locally as the mesquite. Under this general name there are included several very distinct trees, but with the same general habit, which are all grouped under the name of mesquite. Sometimes they are scattered singly over the desert; and sometimes they are clustered together in a dense thicket. The trees are low and scraggley, with the branches sweeping the ground on all sides. They have handsome acacia-like leaves, and long branches of bright yellow flowers, succeeded by the pods which serve some of the Indian tribes as food. Concealed by the leaves are myriads of thorns in all stages of growth, but all hard, sharp and tough. In attempting to penetrate this brush, a gentle tickling at the back of the neck makes you aware of something in store for you, and as you turn to investigate, a branch seizes you by the sleeve, and another is prepared to enter your eye. Something sticking in your flesh

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calls your attention in another direction, and you find a cactus has fastened itself to your pantaloons. Devoting your attention to it, you finally succeed in detaching one thorn from your leg, and stick ten in your fingers, transferring them from one hand to

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