Of the three kingdoms of nature, the vegetable was that which, down to the time of Linnaeus, had received most attention. Mineralogy could scarcely be said to have commenced. Zoology had indeed made considerable progress; but botany had advanced in a still greater degree, having been cultivated by a host of naturalists, chiefly belonging to the medical profession. One of these, Caesalpinus, who flourished in the end of the 16th century, had already invented a system; whereas Ray, who belonged to the 17th, was the first zoologist who formed a methodical arrangement of animals. It might thus be supposed that the examination of plants is easier, while that of minerals is more difficult, than the study of zoology; but the cause of the preference given to the vegetable economy seems to be connected with the value of herbs as articles of the Materia Medica, while the animal kingdom attracted more attention than the mineral, as exciting greater curiosity, and tending more directly to supply the most urgent wants of man. However this may be, it is certain, that in the 17th century the botanists greatly exceeded the zoologists in number. One of the most remarkable of the latter was the subject of the present notice, who, although merely a compiler, and not possessed of much judgment or taste, continued to be a popular author on natural history until his works were superseded by those of Linnaeus. John Jonston, descended from a family originally Scottish, was born, in 1603, at Sambter, near Lissa, a city of the palatinate of Posen in Poland. After studying at Beuthen on the Oder, and at Thorn in the Prussian dominions, he prosecuted his education at the University of St Andrews; whence, in due time, he returned to his native country, and for three years acted as tutor to the sons of Count Kurtzbach. He then studied medicine and natural history in several of the more distinguished seminaries at home and abroad. In 1632, he took charge of two young noblemen, whom he accompanied to England, Holland, France, and Italy. At Leyden he obtained a medical degree, and was offered a professorship; which, however, he declined, preferring a private life. On completing his travels, he retired to a place in the neighbourhood of Lignitz, where he spent the rest of his days. He died on the 8th June 1675.