282 
FOREST AND STREAM. 
[Feb. 22, 1908. 
use 
MENNEN'S 
BORATEDTALCUM 
TOILET POWDER 
and insist that your barber use 
it also. It is Antiseptic, and 
will prevent any of the skin 
diseases often contracted. 
A positive relief for Chapped 
Hands, Chafing, and all 
afflictions of the skin. Removes all odor 
of perspiration. Get Mennen’s-the original. 
Put up in non-refillable boxes, the "box that lox." Guaran¬ 
teed under the Food and Drugs Act, June 30, 1906. Serial 
No. 1542. 
Sold everywhere or mailed for 25cts. Sample free. 
Try Mermen's Violet (Borated) Talcum. 
GERHARD MENNEN CO.. Newark, N. J. 
The Optimist and Pessimist, the difference is droll: 
The Optimist sees the doughnut, the Pessimist the hole. 
You can’t be a Pessimist and own a 
Strelinger 
(4 Cycle, 1 to 4 Cylinder) 
IT ALWAYS GOES 
BEST MARINE ENGINE MADE 
We also carry in stock several of the 
bestmakes of 2-Cycle Marine Engines, 
and a full line of Stationary Engines, 
Pumping and Electric Lighting Outfits, 
Boat Accessories, Etc., Etc. 
THE STRELINGER 
Let us know your wants and we will quote prices. 
Engines 1 1-2 to 50 H. P., - - $33 to $2,500 
THE STRELINGER MARINE ENGINE CO. 
Dept. 6, 46 E. Congress St., 
Detroit, Mich., U. S. A. 
Training the Hunting Dog. 
For the Field and Field Trials. By B. Waters, author 
of “Modern Training,” “Fetch and Carry,” etc. 
Price, $1.50. 
This is a complete manual by the highest authority 
in this country, and will be found an adequate guide for 
amateurs and professionals. 
Contents: General Principles. Instinct, Reason and 
Natural Development. Natural flualities and Character¬ 
istics. Punishment and Bad Methods. The^ Best Les¬ 
sons of Puppyhood. Yard Breaking. "Heel.” Pointing. 
Backing. Roading and Drawing. Ranging. Dropping 
to Shot and Wing. Breaking Shot, Breaking in, Chas¬ 
ing. Retrieving. 
FOREST AND STREAM PUBLISHING CO. 
Mullins •‘Get There” VZStZXZX 
Unequaled for use In very shallow water or through tangled grass 
and reeds. Thousands are in use, and endorsed by sportsmen every¬ 
where as the lightest, most comfortable and safest duck boat built. 
Length 14 ft., beam 36 in. Painted dead grass color. Price $22.00. 
Write Today for Our Large Catalogue of 
Motor Boats, ltow Boats, Hunting and Fishing Boat* 
The W. H. Mullins Co., 126 Franklin St., Salem, O, 
Houseboats and Houseboating 
BY ALBERT BRADLEE HUNT 
I 
A volume devoted to a new outdoor field, which has for its purpose 
three objects: 
FIRST —To make known the opportunities American waters afford for enjoyment of 
houseboating life. 
SECOND —To properly present the development which houseboating has attained in 
this country. 
THIRD—To set forth the advantages and pleasures of houseboating in so truthful a 
manner that others may become interested in the pastime. 
The book contains forty specially prepared articles by owners and designers of well- 
known houseboats, and is beautifully illustrated with nearly 200 line and half-tone 
reproductions of plans and exteriors and interiors. A most interesting chapter is devoted 
to houseboating in England. 
Outdoor people, and, above all, city people, will be greatly interested in this volume. 
The people of the United States are turning more and more toward an open-air. life in 
summer, yet the lands accessible to centers of civilization are being taken up and utilized 
so rapidly that they are each year growing more and more expensive. 
The work is printed on extra heavy paper, and is bound in olive green buckram. 1 he 
price is $3.00 net. Postage 34 cents. 
FOREST AND STREAM PUBLISHING COMPANY 
346 Broadway, New York 
THE STRUCTURE OF WOOD. 
It is doubtful if any of the laboratories main¬ 
tained by the government for scientific research 
are more unique in character, and yet bear 
promise of more important results, than one 
which has just been established in Washington 
by the United States Forest Service for investi¬ 
gating the structure of commercially important 
woods. 
Laymen will not understand the significance 
of the proposed investigations carried on in this 
laboratory so quickly as architects, builders and 
other wood users, who in these days of grow¬ 
ing scarcity of the more valuable woods are 
seriously perplexed in identifying substitutes. 
Mistakes of this kind in identification have, in 
the last few years, in several instances, meant 
the loss of thousands of dollars, and many em¬ 
barrassing law suits. 
Nearly any user of lumber can recognize, and 
name offhand, all the usual trees of the forest 
when he sees them growing, and not much diffi¬ 
culty is encountered in identifying the common 
kind of lumber in a mill yard because he knows 
the few trees from which the yard lumber comes. 
But common kinds are growing scarce, and 
woods not often cut heretofore, are appearing 
in the markets. The most experienced men are 
sometimes puzzled when they try to identify 
them, and persons with less experience have 
still more trouble. Is a certain wood gum or 
elm? Is another cucumber, linn, or poplar? Is 
a stick sugar maple or red maple? Doubts may 
arise whether a piece is hemlock or spruce, or 
whether it is lodgepole pine or fir, or whether , 
a shingle is cypress or cedar. A dealer may buy 
red oak and suspect that he is getting some¬ 
thing else. There are thirty or more important 
species of oak. The best lumber dealer might 
not know which is which in the lumber pile, or 
if he knows, he might not know how to prove it. 
Many of these woods look alike, even to the 
trained eye of the millman or the builder, and 
yet they are widely different in value for cer¬ 
tain purposes, and it is of the greatest im¬ 
portance to be able to distinguish them quickly 
and certainly. Again, a new wood may come 
to a man’s notice for the first time, and it' may 
be necessary for him to decide what it is and 
wiiat it is worth. _ > 
The government has been helping individual 
'umber users for some time, but the facilities 
have not been near so complete as they are now. 
It is to meet such needs and answer such ques¬ 
tions, that the Forest Service has established 
the laboratory, and placed it in charge of a 
trained dendrologist. Architects, lumbermen, 
manufacturers and makers of woodware are al¬ 
ready sending in samples of wood for identifi- • 
cation, and asking if there are not some struc¬ 
tural characters by means of which such woods ; 
may be conveniently separated for - relative < 
species having greater or less value for some 
specific purpose. 
The laboratory will investigate in a practical 
way. The structure of woods, sections length¬ 
wise and crosswise, will be studied so as to sepa¬ 
rate by structure alone the various species of a 
genus. Analytical keys to the trees of each - 
group will be worked out. These will be based • 
on the arrangement and character of the pores 
discernible to the naked eye or by a hand lens. 
The result will be published from time to time 
with good illustrations and placed at the dis¬ 
posal of lumber users. After all the important 
groups of wood, such as oaks, pines and firs, 
have been studied and the result published sepa¬ 
rately, the several monographs will be col¬ 
lected and published in one volume. 
A work of this character has long been in de¬ 
mand by architects, builders and other users of 
lumber. It will, in most cases, enable even a 
non-technically trained man to determine quite 
readily the wood he deals with by means of an 
ordinary hand lens and by comparing the wood 
in question with the photographs of cross and 
long sections given in these monographs. 
