1. Truthfulness of description. Representations and warranties to be distinguished from conditions, sec 559.

Description may be a condition precedent, sec 560.

But this may be waived and suit brought on warranty, sec 561.

When goods are accepted and retained after due opportunity of inspection, purchaser cannot sue for obvious variance from description, sec 562.

Describing goods as "to arrive" by a ship is a condition precedent; describing them as on board a ship is a warranty, sec 563.

Condition may on part performance be representation, sec 564.

On sample sales purchaser should have opportunity of inspection, 565.

Sale of negotiable paper implies genuineness, sec 566.

2. Notice.

When required by contract, notice must be given, sec 567.

Notice of goods "to arrive," sec 568.

In insurance, notice of loss not required unless stipulated, sec 569.

Guarantors and indemnifiers entitled to notice-of acceptance, sec 570.

And so of notice of default, sec 570 a.

When debt is conditioned on event in creditor's peculiar knowledge, notice should be given, sec 571.

Whether notice is received is a question of fact, sec 572.

Drawer and indorser entitled to notice of dishonor, sec 573.

Lessor's covenant to repair conditioned on notification, sec 574.

3. Request or demand.

Prior demand not necessary to constitute indebtedness, sec 575.

Demand necessary when implied in contract of bailment or other contract, sec 576.

Bonds conditioned on payment on demand require demand, sec 577.

4. Delivery or other action by promisee.

When payment is conditioned on delivery or completion, this is a condition precedent, sec 579.

Successive instalments may be conditioned on discharge of duty on first, sec 580.

In executory agreements, conveyance and payment may be concurrent, sec 581.

But payment may precede delivery, sec 582.

Purchaser may take risk of delivery, sec 583.

In cash sales delivery and payment are concurrent, sec 584.

Delivery of goods may be conditioned on supply of material, sec 585.

Covenant to repair may depend on act of lessor, sec 586.

5. Discretion of promisor.

Promise dependent on promisor's choice is invalid, sec 588.

Otherwise if dependent on promisor's approval of goods or work, sec 589.

And so of contracts of sale and return, sec 590.

Right of approval is not to be capriciously exercised, sec 591.

6. Action of third party.

Third party may be made arbiter of condition, sec 593.

Building contracts may be conditioned on approval of architect, sec 594.

Subscriptions may be dependent on action of third parties, sec 595.

Refusal of third parties no defence to guaranty, sec 596.

7. Contingent future event.

Collateral matter may be made a condition precedent, sec 597.

Promise to pay out of a fund restricts to such fund, sec 598.

Bills of exchange may be accepted or indorsed conditionally, sec 599.

Casus may vacate or institute obligation, sec 600.