All the plots in the 3 series, with the exception of two 

 which are lower down on the right, will be found on the left- 

 hand side of the road. On the right-hand side of the road are 

 four plots of lime trees which receive a complete manure. 

 Two of these plots consist of the ordinary spiny type and one 

 of the spineless variety, both kinds being budded on the sour 

 orange stock. The spineless variety was discovered many 

 years ago on the Shawford Estate, and following its discovery 

 was planted on several other estates throughout the Island. 

 In spite of the advantage it possesses over the spiny type in 

 being unarmed with spines, it is a less prolific bearer, and for 

 this reason has not been extensively planted. The fruit of 

 the spineless variety though small, possesses a very thin rind, 

 an abundance of clear juice, and contains fewer seeds than the 

 ordinary kind ; but these good points do not appear to out- 

 weigh its shy -bearing qualities. 



At the end of these plots stands the old military cemetery, 

 in front of which several trees of Shea Butter, Butvrospermum 

 Parkii, are growing. The Shea Butter tree has been mentioned 

 elsewhere in this guide. It is a slow growing tree and is a 

 native of Africa. Continuing along the road other lime plots 

 under manurial experiments will be found lower down the 

 valley. These experiments, like those already noted, are 

 conducted in 3 series. Each series consists of three lacre 

 plots. The following treatment given to series 1, is repeated 

 in series 2 and 3. 



The plots are numbered 16 to 24. 



Plot 16, 500 lb. Mixed Fertilizer. 

 Series 1 Plot 17, Control (no manure). 



Plot 18, 1,000 lb. Mixed Fertilizer. 



In addition to the fertilizers, each plot, with the exception 

 of the controls, receives an application of mulch at the rate of 

 2i tons per acre. 



Mulch, consisting of the leaves and succulent twigs of 

 various leguminous plants, as well as cut grass, bush, cane- 

 tops, or any other vegetable material, forms an essen ial and 

 valuable addition to tropical soils. Mulch not only gives the 

 soil the necessary protection from the strong rays of the sun, 



