The following Table, showing the climate, duration and production of certain plants cultivated in tropical America, is from the proceedings of the Agricultural Society of Grenada. The second, column gives the altitude in English yards above the level of the sea. The third, the mean temperature by Fahrenheit's thermometer. The fourth, the average time required to commence bearing. The fifth, the number of plants in a Spanish "fanegada" of 170 varras, about 153 square yards. The sixth, the average duration of each plant. The seventh, the average produce of each plant in the year:-- -----------------+-----------+---------+--------+------+------+-------- | 2 | 3 | 4 | 5 | 6 | 7 |Level of |Mn. Temp.| Time |No. of| |Average |the Sea, to|Deg. Min.|Required|plants|Years |produce -----------------+-----------+---------+--------+------+------+-------- Cacao | }|81.17 |6½ | 1,156| 40 |1¼ lb (_Theobroma |587 yds. }|46.00 |yrs | | |per tree Cacao_) | }| | | | | +-----------+---------+--------+------+------+-------- Plantain {|630 yds. to|81.17 | 9 mths.| 3,613| 30 |50 (_Musa {|1077 |46.00 |9½ " | | |plantains Paradisiaca_) {| |40.61 |11 " | | | +-----------+---------+--------+------+------+--------- Indian Corn {|1077 |81.17 | 90 days|28,900|Annual|238 for (_Zea Mays_) {|1260 to |40.61 |110 " | | |every {| 1890 |36to37.80|120 " | | |seed {|2880 |25.20to27|180 " | | | +-----------+---------+--------+------+------+-------- Manioc or {|1077 |81.17 |10 mths |28,900|Bicen-|One Cassava {|1195 |40.61 |12 " | |nial |cassava {| |43.00 |120 days| | |weighing {| | | | | |¾ lb. {| | | | | |¼ oz. {| | | | | |starch +-----------+---------+--------+------+------+-------- Coco nut | 630 |81.17 |5 yrs. | 452| 60 |4 bottles (_Cocos | |46.00 |6 " | | |oil per nucifera_) | | | | | |tree +-----------+---------+--------+------+------+-------- Tobacco {| 630 |81.17 |150 days|28,900|Annual|½ lb. (_Nicotiana_ {|1077 |46.00 |170 " | | |_dried_ _tabacum_) {|1980 |40.61 |180 " | | |to each {| |33.30 |225 " | | |5 plants