— 139— 



1826, and the part which includes the Tortricids, could not have been 

 published earlier than 1823 and perhaps later than this. 



Frolich, in his Enumeratio Tortricum, published in 1828, refers to 

 the first 46 plates but not to the 47th. Treitschke in Die Schmetterlinge 

 von Europa, Vol. V. published in 1830, (the preface is dated Dec. 1829), 

 refers to this 47th plate, so we may feel sure it was published late in 1828 

 or early in 1829, after Frolich's work but before Treitschke's. The con- 

 temporaneous French and English works afford no assistance for then 

 authors do not appear to have received Hubner's works for some little 

 time after their appearance. 



Plates 48 to 52 inclusive, of the Tortricids were published in 1830 

 as shown by the date on the original wrappers in the Royal Library in 

 Berlin. Plate 53, the final one of the Tortricids in the Sammlung, is re- 

 ferred to by Treitschke in his Supplement, Part 3, published May 10th, 

 1835, but this plate was first offered for sale by Geyer in his prospectus 

 dated Jan. 1, 1834 which must be regarded as the time it was published. 

 Summing up the above, the dates of publication of the Tortricids in 

 Hubner's Sammlung Europaischer Schmetterlinge are as follows: 



Plates 1-30 incl. were publ. later than 1796 and earlier than 1800. 



" 31-40 " " " 1 8 1 1 ? " " 1820. 



" 41-46 " " Dec. 22, 1823. 



" 47 was published late in 1828 or early in 1829. 



" 48-52 inclusive were published in 1830. 



" 53 was published Jan. 1, 1834. 



The Present Status and Future Prospects of Silk Culture 

 in the United States.* 

 By C. V. Riley 

 The subject is discussed under the following heads: 



1. The adaptability of the U. S. to Silk-culture. 



2. Silk-culture in the Gulf States. 



3. Silk-culture on the Pacific coast. 



4. Profits of Silk-culture. 



5. Necessity for a home market for the cocoons. 



6. The prospects of establishing a market by private enterprise. • 



7 The practical outcome of the efforts by the Department of Agriculture 

 in promoting Silk-culture under present restrictions. 

 The paper deals with the above named subjects in detail and the es- 

 sential, conclusions are: 



1. The adaptability of our country to Silk-culture is proven beyond 

 all question. 



T Abstract of a paper read at the recent meeting of the Am. Ass Adv. Sc. 



