companions, partly because he was of a friendly and companionable nature, partly, no doubt, to vary the monotony of Mrs. Agassiz’s constant complaints, but mainly because his ambitious schemes were impossible without assistance. His work involved great expenditure, which he could only recoup in part from the scanty grants allowed him by scientific societies, and the patronage of occasional wealthy amateurs. The first qualification necessary in a “companion” was a certain indifference as to salary, and the usual arrangement was that Agassiz should provide board and lodging in the hôtel, and that, if his assistant were in need of money, Agassiz should provide some if he had any lying loose at the time. This at least was the substance of the contract between Agassiz, on the one hand, and Edouard Desor of Heidelberg University, on the other hand. Desor is perhaps the most famous of the little band. He was a political refugee, “without visible means of subsistence.” He was a talented young gentleman with a keen interest in scientific disputes, and an eye for what is vulgarly known as personal advertisement. In other words he shared the very human weakness of enjoying the sight of his name in honoured print. Another companion was Karl Vogt. Mrs. Agassiz had two great quarrels with life. The first was a shortage of funds, and the second was the impropriety of the stories exchanged between Vogt and Desors. Another companion was a certain Gressly, a gentleman whose main charm for Agassiz consisted in the fact that, “though he never had any money, he never wanted any.” He lived with Agassiz in the winter as secretary. In summer he tramped the Jura in search of geological data. He never bothered about money, but was always prepared to exchange some good anecdotes for a night’s lodging. Eventually, he went mad and ended his days in an asylum. Yet another famous name, associated with Agassiz, is that of Dollfus-Ausset, an Alsatian of Mülhausen, who was born in 1797. His great works were two books, the first entitled _Materials for the Study of Glaciers_, and the second _Materials for the Dyeing of Stuffs_. On the whole, he seems to have been more interested in glaciers than in velvet. He made, with Desor, the first ascent of the Galenstock, and also of the most southern peak of the Wetterhorn, namely the Rosenhorn (12,110 feet). He built many observatories on the Aar glacier and the Theodule, and he was usually known as “Papa Gletscher Dollfus.”