1666'] 
Experiments to he made relating to Land-Carriage, 
proofed bj the learned Sr. "WxWi^m Petty Kt. 
T He water carriage of goods round about the Globe of 
the Earth, is but about double to the price of Land Car* 
riage from Chcftsr to London of the like goods. 
Land Carriage by Carts and Wagons is cheaper then oa 
horfes backs^ and this cheaper then by men. 
Wherefore carriage by Carts and Wagons ought well to 
underftood and confidered. 
^ Land Carriage by draught, is by Wheele-barrows, Strad- 
dles, Carts of 2 wheels, Sleds, Wagons of 4 wheels, by 
Carrs on 2 high wheels. Drays on 2 fmall wheels, Irifli Carrs 
of i very fmall wheels, Theprefent work is todefign expe- 
riments whereby to know the difference and advantages of 
all the faid feveral Carriages upon feveral wayes and grounds. 
To which purpofe it is offer 'd that the following experi- 
ments be made, vtz,. 
E X P E R I M E N TS. 
1 . The difference between what a Man or Horfe can Car- 
ry, and what they can draw up at a Pulley. 
2. The difference what a Man can endure to Carry one^ 
two, three, fower, five, fix hours, &c. 
3 . The difference of Speed that a Man can make under 
feveral burthens, within the fame time. 
4. Let the difference between the weight of a common Irijh 
Carr, and the burthen whicli a horfe can draw upon it be ex- 
amined, as alfo the like difference between a Cart for yhor- 
les and its burthen, and between a Coach with a Coach-man 
with its burthen, and between the Pack faddle and of a Pack- 
horfe and its burthen. • 
r. Let the difference between a Horfes draught upon a 
fmall Carr, and a 5: Horfes draught upon a great Cart and 
4 wheel'd Wagon be examined. 
6* Let the fame differences of horfes draught at feveral 
diftances from the carriage,and upon wheels of feveral heigh ts^ 
be examined. 
7. Let the juft weight of wheels be determined, to make 
them of the fame ftrength though of different diameters,and 
at what diftance wheels of feveral heights fhould ftandfrom 
each other. 
8. What 
