Pronunciation of words with a fricative content was elicited over a seven-month period from seven English-speaking children ranging in age from 1;5 to 2;3. The recorded speech was analyzed for correct fricative production and substitutions. Results indicate that: (1) overall percentage of correct production is slightly higher in final position than in other positions; (2) individual subjects did not favor a specific position for all fricatives, nor was one particular fricative consistently favored by all children; (3) although there is considerable variation, substitutions of tighter closure are found in highest concentration in prevocalic position, followed by initial preconsonantal position; (4) there was no clear longitudinal order progression of fricative substitutions; and (5) there is considerable evidence for an order of fricative acquisition that varies somewhat from child to child. (JB)