towards the end of July. Being in a meadow near Cookham, in Kent, on 

 the 5th day of August, 1748, I observed a female Swallow-tail hovering over 

 certain plants, which I found to be the meadow saxifrage, and examining 

 them carefully, I discovered four eggs just laid by the fly, wherewith I was 

 highly pleased. On the 1 3th of the same month these eggs produced cater- 

 pillars. On the 22nd of September, the caterpillars were full-grown, and 

 fixed themselves in order to change into the chrysalis, which was produced 

 on the 26th of September, it which state it still remains (Jan. 20th, 1749). 

 I fed the caterpillar from its being first hatched, with the green leaves of the 

 common carrot, which it eats plentifully. This fine butterfly may be taken 

 in the meadows and clover fields, about Cookham, near Westrain, in Kent, 

 at the times above mentioned. It flies so swiftly that it is vain to follow it, 

 you must, therefore, wait till it settles, and then if you be near, be nimble, 

 and you may catch it without much difficulty." 



" In 1776, Moses Harris writes of it : " By some Aurelians it is called the 

 " Royal William," probably as a compliment to His Eoyal Highness, William 

 Duke of Cumberland, who was popular for his defeat of the rebels in 1745, 

 about the time when this insect appears to have been first particularly noticed. 

 The caterpillar is large and beautiful, smooth and pale -green on the back, 

 being striped with black transverse lines, in the same manner as the stripes 

 of the zebra, on which lines are spots of fine crimson. It feeds principally 

 on wild fennel/' 



In " White's Natural History of Selborne" is a comparative view of the 

 Calendar of Selborne, kept by the Rev. Gilbert White, at Selborne, in Hamp- 

 shire, and William Marwick, Esq., at Catsfield, near Battle, in Sussex. In 

 it we read : " Swallow-tailed butterfly appears August 2nd. White ; April 

 20th, June 7th, last seen August 28th Marwick." 



In the end of June, 1798, several larvae were found by the Rev. Dr. 

 Abbott, at Windlesham, near Bagshot, in Surrey ; from these, in the follow- 

 ing August, he reared some splendid Swallow-tails. 



In his " Lepidoptera Britanica," published in 1803, Haworth writes, "I 

 know that Mackaon breeds near Beverly, in Yorkshire yet, and my brother- 

 in-law, R. Scales, of Walworth, near London, possesses a specimen of it 

 which was taken there about seven years ago. 



Between the years 1805 and 1815 several were taken in Dorsetshire; at 

 Hinton Mutel, by the Rev. D. Storey ; at Charminster, by Mr. Garland; 

 at Wimborne, Blandford, Hazlebury, and Glanvilles Wootton by my father, 

 the last being on the 17th of August, 1815. In August, 1808, at Glanvilles 

 Wootton, he took twelve specimens on three consecutive days. They used 

 to frequent chalk hills, and smelled very strongly of mint. About the same 



