360 THE MONTHLY BULLETIN. 



inspection for possible developments, we have added as a matter of 

 further insurance a unique, perhaps original feature under the circum- 

 stances — the introduction in large numbers of useful insects both pred- 

 atory and parasitic. The immense amount of material and the pro- 

 portions of some of the individual specimens passed in, after treatment, 

 for exhibition purposes, warrant the assumption that Aphis, Pseudo- 

 coccus and perhaps species of Coccids, might develop from eggs that 

 had escaped the effect of fumigation. Fortunately no pe.sts of major 

 importance, such as Gipsy ]\Ioth, White Flies, Boll Weevil or Alfalfa 

 Weevil were connected in any way with this fumigated material, and 

 all of the same is confined beneath the great dome of the Palace of 

 Horticulture, where conditions are ideal for the establishment of the 

 several forms of Hymenoptera known to prey upon such insects. 

 Coccinellids also have been released in immense numbers on the theory 

 that they would search out and destroy any earlier forms of such pests 

 before the same had time and opportunity to breed and make their 

 presence apparent. 



AVe have also furnished those in charge of the outside grounds with 

 immense numbers of predatory insects at such times as Aphids have 

 appeared on locally grown plants, and a particularly fortunate instance 

 of this method of control was obtained over a serious infestation of 

 Aphis on the famous "floral" fence. 



In these our attempts at insect insurance in connection with both 

 the domestic and foreign grown plants at the Exposition w'e have met 

 with capable co-operation from several sources. Mr. E. M. Ehrhorn, 

 entomologist for the Territory of Hawaii and for many years quaran- 

 tine officer for the State of California, sent to us generous supplies of 

 Crijptola'mns motitronzieri for this purpose. From the State Insectary 

 at Sacramento we have received and distributed fully 400,000 Hippo- 

 damia convergens and perhaps 3,000 Leptomastix sp.,. and from other 

 sources in California liberal supplies of tree climbing Coccinellids, 

 such as Chilocorus hivulnerus, Olla abdominalis, and also Scutellista 

 cyanea, all of which endeavors we believe to be in direct line with the 

 permanent policy and motto of the Quarantine Division that in the 

 protective mea.sures devised and prosecuted by the Horticultural Com- 

 mission of the State of California "the end justifies the means." 



In the final summing up history must be the judge of whether or 

 not our efforts succeeded. It takes time to positively determine such 

 things. If they did, the credit is due, first to the capable, powerful 

 co-operation of the Collector of the Port in all matters concerned with 

 horticultural regulations; next to the admirable regulations of the 

 Plant Quarantine Act as devised by the Federal Horticultural Board 

 and to the untiring efforts of the in.speetors of the State Quarantine 

 Division stationed at San Franci.sco, and very largely to the inde- 

 fatigable energy, the zeal, tact and sound judgment of my Deputy 

 Quarantine Officer, George Compere, who has had active charge of this 

 work. 



If sub.sequent history should show that we failed of the complete 

 purpose striven for, the fault is all mine in that I Avas not equal to the 

 occasion— that when furnished the opportunity I fell short of the 

 standard that the crop producers of California should always demand 

 of the one they place in charge of their horticultural quarantine service. 



