
ETT as 
may make payment in cash and claim reimbursement therefor on his 
regular travel voucher with an explanatory note of the reason for 
failure to use transportation requests. 
A-24720, page 195: Traveling Expenses — Use of American Vessels. 
"Section 601 of the merchant marine act of May 22, 1928, 45 Stat. 
697, requires officers and employees of the United States when 
traveling on official business overseas to use vessels registered 
under the laws of the United States when available both in going to 
and returning from the foreign country unless there be furnished 
proof, satisfactory to the Comptroller General of the United States, 
of the necessity for the use of a vessel of some other nationality. 
A-246359, page 199: Traveling Exoenses — Sleeping—Car Accommoda— 
tions — Stopovers for Personal Convenience. 
"Where civilian employees traveling under orders with sleeping-—car 
privileges make stop-overs en route without official authority, to 
spend nights in hotels rather than on trains, such expenses when less 
than authorized sleeping car accommodations will be paid, but the 
employee will be charged with annual leave or leave without pay for 
the time lost by reason of the stop-—-overs. 
A-25283, page 299: Advertising — Bids — Acceptance on Basis of 
Mlement not Mentioned in Advertisement. 
"A bid should not be accepted because the bidder proposes to do the 
work in less time than the lowest bidder when the advertisement for 
_ proposals has not notified all concerned that the time element would 
be considered in the acceptance of bids. 
A-24969, page 354: Contracts —- Purchases of Indefinite Quantities. 
"While it may be proper in inviting bids and making contracts for 
the furnishing of supplies to provide for a reasonable variance from 
the quantities stated, this should be done by specifying not exceed- 
ing a maximum percentage for such variance — such as 10 per cent or 
20 per cent, depending upon the articles or supplies to be pur- 
chased — so that a bidder may know the maximum quantity he may be 
called upon to furnish, and the maximum amount of the obligation 
against the appropriation may be determined at the time the con- 
tract is made. Where it is found that a quantity in excess of the 
maximum percentage variance is required such excess should be pur- 
chased independently of the original contract and after proper 
advertising. 
"Par. 95 (r) of the Standardized Government Travel Regulations re- 
quires that receipts be furnished in support of travel vouchers 
claiming reimbursement for sleeping-car, parlor-—car, and stateroom 
fares when paid in cash, and an affidavit that such receipts have 
been lost can not be accepted as authorizing reimbursement of such 
expenses. 3 Comp. Gen. 775 no longer applicable. 6 Comp. Gen. 
116 distinguished. 

A-25599, page 391: Traveling Expenses — Pullman Receipts. 
