mals had contracted the disease. Owing to a considerable' 

 amount of sediment in the water the filters soon became clogged, 

 and the experiment had to be abandoned. The principle, how- 

 ever, is no doubt correct and if the mechanical difficulties could 

 be surmounted the disease could most likely be controlled or pre- 

 vented by means of the filters. These would at the same time re- 

 move the eggs and embryos of intestinal parasites which, I am 

 inclined to believe, always play a certain part wdiere nervous 

 symptoms appear endemically among horse stock. 



Rabies in Dogs. During the latter part of the last calendar 

 year the attention of the Board was called to the fact that rabies 

 among dogs was quite prevalent in certain parts of California, 

 and so long as this Territory was practically unprotected against 

 an invasion of the disease, instructions were issued from this 

 division to prepare a regulation for the purpose of preventing it 

 from gaining entrance here. A thorough investigation of the 

 subject proved that preventive measures were urgently needed, 

 and while the resulting regulation did not go into effect until 

 March 1st of the present year, it was considered well to mention 

 the matter in this report so long as subsequent developments have 

 caused the establishment of a four months' quarantine against 

 dogs, and made the enforcement of the same one of the most im- 

 portant branches of work of this division. 



By inquiry through official channels it has been learned that the 

 present outbreak of rabies in California alone has already de- 

 manded a toll of not less than nine human lives from hydrophobia, 

 while hundreds (officially reported cases) of dogs and other do- 

 mestic animals have succumbed to rabies or have been destroyed 

 after being exposed to the disease through bites inflicted by in- 

 fected animals. The seriousness of the situation is best realized 

 by stating that it has become necessary to establish not less than 

 eight official stations for administering the Pasteur treatment to 

 persons bitten by rabid dogs, in California alone, and that similar 

 measures have been, or are being taken by neighboring states. 



This Territory has, as stated, protected itself by the enforce- 

 ment of a rigid quarantine against all dogs coming from or 

 through countries where the disease is known to exist, and by a 

 campaign of eradication of ownerless dogs within the Territory. 

 As there can be little doubt that the entrance of the disease into 

 this Territory, in its present unprepared state, would prove noth- 

 ing short of a calamity, it is to be hoped that the measures now in 

 force will prove effective, until such time as the respective au- 

 thorities shall be able to cope with it and be prepared to protect 

 human life as well as that of dogs and other domestic animals as 

 is now being done by this Board. To postpone the preparation 

 for administering the Pasteur treatment, until the disease is actu- 

 ally here, would seem somewhat risky in view of the distance we 

 are removed from the nearest place where it can now be obtained, 

 and it is therefore urgently recommended that steps be taken 



