42 An activity consisting of technical and stylistic design of clothing, textiles, machines, installations and civil and industrial manufactures in general; an activity consisting of services rendered in providing for lodging and lodging and board by hotels, boarding houses, camping, tourists homes, boarding farms, sanatoriums, retirement and convalescent homes; services rendered by exercises who essentially provide for food and beverages prepared for consumption, such as services rendered by restaurants located in highway service stations, cantines, inns; an activity consisting of the management of beauty parlours, of hair dressing saloons; an activity consisting of services rendered by persons, individually or collectively, pertaining to organizations requiring a high level of mental activity or referring to theoretic and practical aspects of complex fields of human effort; an activity of technical consulting; an activity of legal consulting; an activity of fiscal law consulting; an activity achieved by engineers, chemists or physicists; an activity exercised by traveling agencies or by brokers caring hotel booking for travelers; services rendered by engineers or technicians effecting evaluations, estimates, researches and surveys; services rendered by associations to their members which pertain