Going West, you gain a day. Going East, you lose a day. Except for Thomas. We don't iose a minute. Over 94% of orders received are shipped within 24 hours. Because we're committed to getting your order to you when you want it and need it. Thomas is noted for keeping items " in stock"—pre-packaging orders—operating our order processing depart-rrmnt24 hoursaday with sophisticated computer and information display systems. Our materials handling system is designed to put your order in

your receiving department as quickly as possible. Call Thomas for your next laboratory purchase. With Thomas, you stand a better chance of get­ting your order faster—anywhere in the East or West. Arthur H. Thomas Company Vine Street at Third, Philadelphia, Pa. 19105.

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THOMAS C O M P A N Y