262 
CHAPTER OF CRITICISM. 
the lapse of many “ lustrums/’ be generally appreciated by our countrymen. 
Towards the attainment of an object so desirable, I conceive it to be the duty of 
every one who has himself conceived a partiality for the study, to contribute 
according to his ability. 
I am, Sir, 
Your obedient servant, 
Nottingham, Dec. 28, 1838, G„ C. Barton, 
CHAPTER OF CRITICISM. 
The late Dr. Latham’s Papers. 
To the Editor of The Naturalist 
Dear Sir, —In the interesting memoir of Dr. Latham, published in the 25th 
number of this Magazine (p. 26), you state that the only paper you are aware 
of his having published in periodicals, was an admirable article on the tracheae 
of birds, in an early volume of the Linncean Transactions. On looking over 
Donovan’s Naturalisfs Repository the other day, I found the Doctor had 
published at least one other paper'in these Transactions, and that onlchthyology. 
Donovan, in describing (Vol. III.) the Tentaculated Sawfish ( Pristis tentacu- 
latus ), says:—“ This curious species of the finny tribe was made known in the 
first instance through the medium of a paper written by Dr. Latham, and inserted 
in the second volume of the Linncean Transactions , as a new species of the 
Pristis tribe.” 
I think it would be advisable to continue to give as perfect a list as possible of 
the writings of the individuals whose memoirs are published, which will render the 
memoirs not only more interesting, but also more perfect, and of greater value. 
I remain, 
Yours truly. 
Law Park , near St. Andrews , Henry Buist. 
Dec. 12,1838. 
The Medium of Mental Power in Man and Animals. 
To the Editor of the Naturalist. 
My Dear Sir, —I am sorry to find myself the innocent cause of seven pages 
and a half of inkshed in your last number (p. 199); if, however, it be interesting 
to your readers, I am well satisfied. I do not feel at all disposed, on such a 
