I don't remember which genealogy site I copied this from, but it should be of interest for those reading this thread. The Caspar Sain (Zurn) mentioned is my direct ancestor, and was a Palatine German, as were most passengers.
On September 26, 1749, 563 passengers from the Palatinate and Zweibrucken, with Casper Sain listed among the voyagers, arrived in Philadephia. 
According to Charles Sain, before the journey across the Atlantic, "Casper Zurn, along with other passengers signed the following contract:
'We, the undersigned, I George Spencer Captain of the ship "Dragon" on the one part and we passengers on the other part, accept and obligate ourselves hereby as persons of honor. On the first part, we passengers, in order to undertake our voyage hence to Philadelphia in North America with the above mentioned Captain George Spencer, are obligated to behave ourselves quietly and as good passengers during the voyage, and to be fully satisfied with the food below specified, agreed upon between the captain and ourselves, and as regard water and further provisions, to comply with regulations the Captain shall find necessary in view of contrairy winds and the requirements of a long voyage.
In the second place, we agree to pay our passage with the following stipulations: Those who are in position to settle (for the passage on money) in Rotterdam, to pay for one person whether man or woman (children under 4 years old being free). From 4 to 14 years 7 1/2 guineas, from 14 and older 15 guineas.
Those who pay their passage in America shall be bound to produce it within 10 days. No passenger shall be allowed to leave the ship in America without knowledge of the Captain, especially such as have not yet settled for their passage. If one of the passengers die on the voyage, the family of such a person shall be obliged to settle for his passage, if he dies beyond the middle point of the voyage hence. But if he dies on this side of the middle point the loss shall be to the account of the Captain.
On the other part, I Captain George Spencer, obligate myself to convey faithfully the undersigned passenger to Philadelphia in North America, if God grants a prosperous voyage, to furnish them with the necessary conveniences on the ship, and further to provide the food herein below specified for this conveyance the above mentioned passage money must be paid to me.
Distribution shall be made daily among these passengers, to wit, to one full passage. (a half passage in proportion, and for children, nothing):
Sunday - A pound of beef with barley
Monday - A pound of flour and a pound of butter good for the hole week
Tuesday - A half pound of bacon cooked with peas
Wednesday - A pound of flour
Thursday - A pound of beef with potatoes
Friday - A half pound of rice
Saturday - Peas, a pound of cheese and six pounds of bread for the hole week and one half pound of bacon
A quart of beer and a quart of water per day. Vinegar, also, is to be taken along on the ship, not only to keep the same clean, in order to insure good and fresh air, but also for the refreshment of the passengers. Since beer sours during the voyage and is very harmful to the health of passengers, only enough beer for the part of the voyage will be taken along, and when this is gone, a double portion of water will be given. Half of the water will be supplied for cooking. Each morning a small glass of Holland gin and each week now and then some vinegar.
We promise to fulfill all the above mentioned and to this end bind our persons and property as of light.'
All of the passengers signed the above document at Rotterdam prior to boarding ship."