40 THE MICROSCOPE. 
been purchased by W. H. Walmsley & Co. Mr. Walmsley has 
been connected with the house of R. & J. Beck since 1877, and he 
has conducted all their American business since that time. There- 
fore the high reputation of the old house will not only be main- 
tained but added to, and the new firm will surely have the success it 
deserves. Business will be conducted at the same old stand, under 
the firm name W. H. Walmsley & Co. 
Dr. H. H. Chase, of Michigan, has completed such arrange- 
ments with H. R. Spencer & Co., of Geneva, N. Y, that he has the 
sole agency for the sale of all their objectives. | Dr. Chase informs 
us in a private letter that in a few weeks he will have on hand a full 
supply of objectives. Already he has quite a supply and soon no 
time will be lost in filling orders. This will be pleasing news to the 
many admirers of the unrivaled glasses of this house. All orders 
should be addressed to Dr. H. H. Chase, as given in our advertising 
columns. 
ANOTHER MICROSCOPICAL JOURNAL. 
HIS time by the house of Jas. W. Queen & Co. It isa bi- 
monthly and costs twenty-five cents a year. ‘The first number 
contains Prof. Duncan’s address on ‘““The Abbe theory of Micros- 
copic Vision,”’ “A Highly Refractive Mounting Medium,” and sev- 
eral items of interest. Its object as announced in an editorial is to 
answer the question, “what’s new in the microscopic line?” It has 
seven pagts of reading matter, and no doubt will give us in time 
many valuable points and hints. 
It is headed “The Microscopical Bulletin and Optician’s Circu- 
lar.” We wish it all the success possible, and express the hope that 
after it has attained some age it will enlarge its columns. 
” 
HOSE who were so fortunate as to read the excellent article by 
Mr. Griffith, in our December issue, on “Practical Hints,” 
possibly noticed something like a repetition of the method of ar- 
ranging diatoms. These two descriptions were written by Mr. 
Griffith at different times and only one of them should have ap- 
peared. Sent together by accident, they reached the printer and 
the repetition was not discovered until too late to be corrected. It 
was not the mistake of Mr. Griffith; it was not anybody’s mistake. 
