30 TXTRODUCTORY. 



CHAPTER VI. 

 Danger of Importing Injurious Insects from Foreign Countries. 



Dealers in fruit at 8an Francisco often have consignments 

 of lemons and oranges arrive by steamships and sailing ves- 

 sels from Tahiti, from Australia, and also from European 

 ports. 



In some cargoes the fruit is seriously infested by scale 

 insects. Australia sends us the red scale {A. aurantii), and 

 Australia, Tahiti, and Europe send the leaf and fruit scale ).4. 

 ritrirold). The latter has not been found, so far as I am aware, 

 in any orchard on this coast. 



A shipment of apples received lately from Xew Zealand was 

 infested by the greedy scale (A. rapax). These species of scale 

 insects generally arrive in a healthv condition. Tlie greedy 

 scale and red scale are both Avell located here. Care should 

 be taken that the A. citricola be not allowed to spread. 

 Remember, " eternal vigilance is the price of fruit." 



CHAPTER VII. 



Danger of Spreading Insect Pests by the Transportation of In- 

 fested Fruit and Nursery Stock. 



It would be supertluous to give any extended repetition of 

 tlie dangers which threaten husbandmen by Iiaving infested 

 fruits, nursery stock, seeds, etc., brought upon his premises, as 

 the danger is fully described in other chapters of this work. 

 The following instances are given for the purpose of further 

 calling the attention of those living in districts not yet infested : 



The Novato Ranch orchard is isolated from any other 

 orchard from which it could become infested ; the pests were 

 brought in return packages, and to this date (July, 18S8), the 

 amount expended by Mr. I)c Long in getting I'id ot' his visitors 

 (codlin moth) must reaeli nearly ten thousand dollars. 



The i»eaeh worm, which was discovered last year (1882), has 



