OAKES AMES.director. 
BOTANIC CARDEN OF HARVARD UNIVERSITY, 
CAMBRIDGE, MASS. U.S.A. 
in making drawings of the average orohld flower. Even with 
this lena you will find it difficult to do mor© than araw 
the single parts of the larger flowers. Usually the Iao~ 
9llvm is selected for drawing, in such oases, as the details 
of the- ealli and the losing of the lip are the important 
things* To make your beginnings lass burdonoome I have 
written out a few directions for you no follow. Those I 
will send on as scon as I can get them typed. Please re- 
member that in successful drawings the capacity to fill in 
surface details which are on*!** obscure unaer the earnera- 
luoids is necessary. After you have indicated the outline 
of the organ being drawn, or the complete flower in such 
species as Pleurothaliis, and hairs, perhaps, suggested the 
dira surface details which are .Just perceptible through the 
camara-luoida prism, the drawing is completed with the 
a&mara-lucida removea. In my laboratory the final drawing 
is dome with the aid of a binocular dissecting microscope. 
This type of instrument gives great depth and brings out 
structures that are often obscure when a monocular dissect¬ 
ing microscope is used. Experience in this work is every¬ 
thing, Jxsat get- discouraged if your beginnings are unsatis¬ 
factory , A little patience will bring facility and the the 
results to be obtained are well worth conscientious effort* 
DOIT HUSKY, LEARN TO USE TEE SUB-STAGE MIKHOH,EiPKIUMEHT 
WITH THE SOURCE Of LIGHT Mi) WITH UlEkERMT INTENSITIES OF 
ILLUMINATION Of THE OBJECT MOM A WYE * USE HARD, SHARP PENCIL. 
