30 
[ Kep. No. 564. ] 
12. That, as nearly all the valuable vegetables which your memorialist 
has sent in seven years to the ditferent ports of the United States have 
perished by neglect after their arrival, because Government had not ap¬ 
pointed any specially responsible agent to preserve the exotics ordered by 
its own Treasury circtdar of the 6th of September, 1827 ; and as he, there¬ 
fore, apprehended that many useful plants might suffer the same fate in 
Florida, notwithstanding his precaution of engaging a private agent there 
to take care of them, he has availed himself of the direct intercourse be¬ 
tween Campeachy and Havana, to forward also to the royal collection of 
exotic plants in Cuba, the peculiar productions of Yucatan ; in return for 
which, he has obtained, with the friendly correspondence, the voluntary 
promise of Dr. Ramon de la Sagra (Professor of the Botanical garden and 
Director of the pattern plantation near that city) to promote the progress 
of an acclimating nursery in southern Florida with all the species of trop¬ 
ical vegetables, native and exotic, with which royal bounty has enriched 
the domesticating nurseries of that island. 
13. That your memorialist most respectfully invites the attention of a 
republican Congress of the United States to the royal orders of Spain, dated 
the 22d April and 10th November, 1829, which manifest the recent en¬ 
lightened policy of the parent Government in effectually promoting the im¬ 
mediate domestication, in Cuba, of all profitable plants of all tropical 
countries ; the subsequent transfer of them all to the Canary islands for 
intermediate acclimation; and the final conveyance of the whole to 
southern Spain for gradual acclimation throughout the whole European 
peninsula: by which means, the Indigo plant of Guatemala is now trav¬ 
elling to be cultivated by her poorest laborers, and manufactured by the 
cheapest process of extracting the dye by simple infusion of the dry leaves; 
and the Cochineal plant and insect of Oaxaca are already propagated and 
prepared with increasing profit to that unhappy nation. 
14. That, therefore, your memorialist more earnestly solicits the atten¬ 
tion of your honorable'assembly to the various communications in which 
he has not only shown that the characterizing phenomena of tropical cli¬ 
mates—a dry warm winter; ,a wet refreshing summer ; a breeze from the 
sea by day and from the land by night; and a continual trade wind— all 
extend up to 28° north latitude ; but also, that below that parallel, south¬ 
ern Florida, by the narrowness and non-elevation of its surface, by its di¬ 
rection towards the south and east, by the westwardly course of the trade 
wind in its latitude, and, moreover, by the steady high heat of the Gulf 
stream from the equator, enjoys a still greater uniformity of tempera¬ 
ture —the grand' desideratum for human health mA. vegetable growth — 
than any island, peninsula, or continent, of greater breadth and elevation, 
within the torrid zone. 
15. That your memorialist, moreover, respectfully represents, that how¬ 
ever diversified the climates of our twenty-four existing States, the one 
great evil of variability of temperature is common to them all; sudden 
changes cutting off the tropical corn of Maine and the tropical cane of 
Louisiana with lYieft'osts of spring and of autumn, and carrying off the 
farmer of the North and the planter of the South consumption of the 
lungs and of the liver; that hence, our invalids who are declining with 
northern disorders of the thorax, or southern disorders of the abdomen, de¬ 
rived from the variable temperature of one section of the Union, merely 
increase or exchange disease by removal to the equally variable temper- 
