562 



SCIENCE 



[Vol. LVI, No. 1455 



tension of the past few years, whicli may ac- 

 count in part for the condition of which I have 

 just spoken. Financially, industrially, polit- 

 ically, socially we are being driven by shifting 

 winds and carried by changing currents. Ship- 

 wreck may be avoided, but clear thinking, cool 

 judging, wise acting must be the pilots at the 

 wheel. 



Once more, we must conserve our spiritual 

 ideals and attainments. This is no time for 

 narrowness of outlook. If ever there was a 

 time when broadness of vision was demanded 

 it is to-day. I wonder if you realize to what 

 extent intolerance, the backward look, narrow 

 minded conservativeness are dominating or 

 attempting to dominate the spiritual life of the 

 day. This too, doubtless, is a passing wave, a 

 manifestation of the reaction which is affecting 

 other aspects of life. But its tendencies are 

 dangerous. They are destructive rather than 

 constructive. They tend to shut men out from 

 the higher realms of spiritual life and thought 

 rather than to welcome them and to incite them 

 to the greatest attainment. The founders of 

 our faith and the builders of our nation were 

 men and women whose heads were set forward 

 on their shoulders, not backward. They ad- 

 vanced into the unknown and made of it a 

 patrimony for those who followed them. They 

 held fast the freedom they had obtained and 

 persistently aspired for more. Had it not been 

 so, picture to yourselves, if you please, the 

 history of the past three hundred years. If we 

 abate the struggle or lose the winnings they 

 have made, picture for yourselves again, if you 

 please, the history of the future. Broad- 

 mindedness, altruism, charity, faith, com- 

 pounded with intelligence and a rational ap- 

 preciation of the temper and needs of the time, 

 these must be components in the lives of the 

 men and women of to-day who are to shape 

 the destinies of to-morrow. 



I have attempted very briefly to summarize 

 some of our resources, the dangers of their 

 abuse and our obligation for their careful 

 utilization. I have also tried to make clear our 

 debt to the future, in the necessity of preserv- 

 ing to posterity as much as possible of the 

 splendid gifts which we have received from a 

 bountiful Creator. I have given you an im- 

 pressionistic sketch iiather than a detailed por- 



trait. I am net a prophet of disaster and I 

 fully believe that as new emergencies arise they 

 will be met by new resources. But I do be- 

 lieve that the duty is laid heavily on each of 

 us to do what in us lies to avert or at least to 

 postpone these emergencies and by living hope- 

 fully, bravely, carefully and with our faces 

 toward the light of the future, to conserve 

 every resource, material and spiritual, that may 

 contribute to an aspiring and inspiring life. 



James H. Lees 

 Iowa Geological Survey, 

 Des Moines, Iowa 



THE PRESENT SUPPLY OF BIO- 

 LOGICAL STAINS 



As many requests have been received for in- 

 foi-mation as to where stains can be obtained 

 at present it seems well to publish a brief note 

 listing the various manufacturers and dealers 

 in this line at present. 



Frequent inquiries are made eoncerning 

 Griibler's stains. In this connection it can be 

 said that there are at present on the market 

 some stains of undoubted Griibler origin and 

 others that are reputed to come from this source. 

 There will undoubtedly be longer lists of 

 Griibler's stains to be obtained as soon as it is 

 easier to import them than at present; but as 

 all of the recent investigations on stains point 

 to the equal quality if not superiority of the 

 American stains, there is no need of looking 

 specially for the reintroduction of the German 

 products. For this reason the domestic market 

 conditions are most important at present. To 

 understand these conditions it must be re- 

 membered that there are three different classes 

 of concerns to deal with in this matter: (1) 

 the basic manufacturers, (2) the specialists in 

 biological stains and closely related chemicals, 

 and (3) the defers in general laboratory sup- 

 plies. 



The basic dye manufactui-ers are of little 

 concern to the biologists, with two exceptions. 

 These two are : 



Caleo Chemieal Co., 136 Liberty Street, New 

 York City. 



National Aniline and Chemical Co., 40 Rector 

 Street, New York City. 



Both of these have departments that prepare 



