ON THE PRODUCTION OF SILKWORM GRAIN. 325 
to procure some good silkworm grain, and who 
followed up an entire course of education at my 
establishment, has put me in communication with the 
Committee of the Sericulture Department of the Inter- 
national Exhibition of 1873, by the intervention of Sir 
Daniel Cooper, chairman of that committee, and they 
very obligingly proposed to me to exhibit my entire 
system of education in the open air in the grounds of 
the Exhibition. 
I have considered it to be my duty, in the interest 
of sericulture, to profit by this unexpected opportunity, 
and thus anticipate, by some years, the date which I 
had fixed for making known what I was doing ; for if 
the system be exhibited, it must, of necessity, in order 
to be well understood and made public, be accompanied 
by a complete explanatory treatise. 
" 1)0 not attempt to cure the disease in so minute an 
animal as the silk worm ; it would be lost labour ; 
prevent it by rational education, and you will succeed,' 
for prevention is better than cure." 
When I began to devote my attention to sericulture, 
and had, after a first season of rearing, familiarised 
myself with the larva and all its transformations, I 
read many books on the subject, in French, Italian, 
and German. 
Among the number there are some which deserve all 
praise, both for the learning displayed as well as for 
the numerous experiments detailed by their authors, 
the minute attention bestowed on their search for the 
causes, and the actual nature of the diseases which for 
a long time past have proved so destructive to the 
magnaneries. Among others, I will mention the ex- 
cellent works of Dandolo, Dr. Cornalia, Eobinet, and 
