from May 1, 1830, to April 30, 1840. 



:iS7 



" species of Vaccinium, two of Gualtheria, a Pyrola, one of the new 

 " Garryas, a Juniperus, Littaea geminiflora, and a few kinds of 

 " Cacti, among which there are some varieties of the small white 

 " one, which I described to you in one of my former letters. 



" On my return I was informed that Mr. Flore si, for whom I 

 " was furnished with letters of introduction, had arrived from 

 " Zacatecas ; he received me very kindly, and offered me every assis- 

 " tance I should stand in need of ; he only regretted that I was not 

 " here during the rainy season, when I might have greatly increased 

 " my collections." 



No. 14. — Zacatecas, January 2lst, 1838. — " I arrived here with 

 " Mr. Floresi on the 14th instant, and employed my time in 

 " delivering the various letters of introduction with which I was 

 " furnished in Mexico, and when the weather was favourable 

 " in collecting a few Cacti, which I was told are abundant here, but 

 " unfortunately they are the common kinds of Opuntia, and but 

 " very few kinds of Echinocacti, which latter I expected to find 

 " in abundance. As yet I have only met with four kinds, and they 

 " are nothing new. The chief country for Echinocacti is in the 

 " neighbourhood of Real del Monte, Zimapan, Valladolid, and 

 " Tlalpuxahua, but in the direction that I am going they are said 

 " to be rather scarce. The same may be said with regard to other 

 " plants in going from here to Durango, which is nearly the same 

 " country as from Guanaxuato to this place." 



No. 15.— Zacatecas, February 20th, 1838.— "I beg to inform 

 " you that I have this day directed to the care of Messrs. M'Cal- 

 " mont, Lyall and Co., Tampico, to be forwarded to you by the 

 " next English packet, 5 boxes marked H. S. 4 to 8. 



" In repacking the Cacti from Bolanos, I found the tall-bearded 

 " kind in such a state as to preclude every hope of safe arrival in 

 " England, and only the points of two were fit for transporting." 



The several boxes mentioned in the above letter, reached 

 Tampico in the beginning of the following month ; but unfortunately 



