TO CORRESPONDENTS. 



Authors' Copies of Communications. — We wish it understood that twelve copies 

 of every original communication, published in this Journal, are at the disposal ot 

 the author, on making known his desire to have them. If authors wish a larger 

 number of copies than this, they will be furnished for the trifling cost of paper and 

 presswork, or binding, if bound. Extra copies in no case, furnished before the pub- 

 lication of the number containing the article. 



Authors should always specify at the head of their MSS. the number of extra 

 copies of their communications which they.may wish to have printed. 



Our British correspondents are requested to forward all communications and par- 

 cels to Messrs. Wiley & Putnam, booksellers, 35 Paternoster Row, London. 



The titles of communications and of their authors, must be fully given. 



Return proofs, not to be sealed, or inscribed with any thing except corrections. 



Notice always to be given when communications sent to this Journal, have been, 

 or are to be, published also in other Journals. 



We request our friends, who desire to have their communications inserted in a 

 particular number, to give us timely notice of the fact, as it sometimes happens that 

 the space is all pre-engaged one number in advance. Attention to this request may 

 perhaps prevent disappointment on the part of authors. 



MAIL SUBSCRIBERS. 



Hereafter our mail subscribers will receive this Journal at five dollars per an- 

 num, they paying their own postage. The subscription price is still six dollars to 

 those who receive it without expense to themselves. Those mail subscribers who 

 have made advances on the coming year, with a view to take advantage of the free 

 postage, heretofore preferred, but now discontinued, will have their accounts sat- 

 isfactorily adjusted. For further particulars, see the 4th page. 



NOTICES. 



The public are cautioned not to make payment for subscriptions to this Journal, 

 except to such persons as are authorized by us to receive it. 



Messrs. C. W. and J. E. James are now collecting for this Journal, and are fully 

 authorized to receive all dues from our subscribers. 



B. & B. S. 



TO OUR SUBSCRIBERS. 



We are under the necessity of urging our friends generally to exert themselves 

 in behalf of our subscription list, which, from the pressure of the times and from 

 the failure of agents, has so far diminished as to place the work in a precarious situa- 

 tion. We hope that every subscriber can obtain one more to add to our list. 



Any one who sends us the subscription money of one year for four subscribers, 

 shall receive a copy of the work gratis for that year. 



